# Andreas H. Gomoll, MD — Knee & Shoulder Surgery > Dr. Andreas Gomoll is Professor of Orthopedic Surgery at Weill Cornell Medical School and Orthopedic Surgeon at NYU Langone Orthopedic Center — specializing in cartilage repair, ACL reconstruction, joint preservation, and meniscal transplantation. **Specialty:** https://schema.org/Orthopedic **Address:** NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor, New York, NY, 10016, US **Phone:** (646) 917-7441 **Website:** https://andreasgomollmd.com ## Hours - Monday: 08:00–17:00 - Tuesday: 08:00–17:00 - Wednesday: 08:00–17:00 - Thursday: 08:00–17:00 - Friday: 08:00–17:00 ## Home Source: https://andreasgomollmd.com/ Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Knee & Shoulder Surgery · New York # Joint Preservation.Cartilage Repair.Sports Medicine. Professor of Orthopedic Surgery at Weill-Cornell Medical School and Attending Surgeon at the NYU Langone Orthopedic Center — with over two decades of experience treating challenging shoulder and knee conditions. Schedule a Consultation ☎ (646) 917-7441 About Dr. Gomoll Dr. Andreas H. Gomoll is a fellowship-trained orthopedic surgeon, Professor of Clinical Orthopedic Surgery at Weill Cornell Medical College, and an attending surgeon at the NYU Langone Orthopedic Center in New York. He specializes in cartilage repair and joint preservation of the knee and shoulder — ACL reconstruction, meniscal transplantation, osteotomy, and rotator cuff repair — for patients of every age and ability. New patients, including out-of-town and international patients, are welcome. Request a consultation online or call (646) 917-7441. 20+Years Experience 170+Scientific Publications 6Medical Textbooks #1Orthopedic Hospital in America Top 1%Academic OrthopedicSurgeons Signature procedure 01 Cartilage & Joint Preservation ### Cartilage Repair Restore your own cartilage with advanced transplant and regenerative techniques — preserving the natural joint instead of replacing it. Explore the procedure 02 Knee Surgery ### ACL Reconstruction Allograft, autograft, and revision ACL techniques for athletes of every level. Learn more 03 Knee Surgery ### Meniscal Procedures Repair, root repair, and meniscal transplantation. Learn more 04 Shoulder Surgery ### Shoulder Procedures Rotator cuff, instability, and joint preservation. Learn more Meet Dr. Gomoll ## A Surgeon-Scientist Restoring Joints — Not Just Replacing Them. Dr. Gomoll has over 20 years of experience as an orthopaedic surgeon and scientist, with more than 170 scientific publications and 5 books on advanced treatment options for joint injury — including cartilage transplants and stem cell biologics. Originally from Munich, Germany, he completed his MD at Ludwig-Maximilians-Universitaet and his Orthopaedic Surgery Residency through the Harvard Combined Orthopaedic Residency Program, training at Massachusetts General Hospital, Brigham and Women's Hospital, and Boston Children's Hospital. “I provide care for patients of all ages and abilities, from weekend warriors to athletes, high school to professional sports, as well as police officers, firefighters, the military and special forces.” — Andreas H. Gomoll, MD - Residency Harvard Combined Orthopaedic Residency Program — Massachusetts General Hospital, Brigham & Women’s, Boston Children’s - Fellowship Orthopaedic Sports Medicine — Rush University Medical Center, Chicago - Board Certification American Board of Orthopaedic Surgery — Orthopaedic Surgery & Sports Medicine subspecialty - Academic Title Professor of Clinical Orthopedic Surgery, Weill Cornell Medical College · Orthopedic Surgeon at NYU Langone Orthopedic Center Read Full Biography View Full CV & Credentials - ### Professor at Weill-Cornell Medical School Active academic appointment training the next generation of orthopedic surgeons. - ### Orthopedic Surgeon at NYU Langone Orthopedic Center Sees patients and operates at the NYU Langone Orthopedic Center in Midtown Manhattan. - ### Harvard Orthopaedic Training Completed the Harvard Combined Orthopaedic Residency Program and fellowship in sports medicine. - ### 170+ Peer-Reviewed Publications Author of 170+ scientific publications and 5 books on advanced joint preservation and cartilage repair. - ### Trusted by Pro Athletes & Military Patients from weekend warriors to professional athletes, police, firefighters, and U.S. special forces. NYU Langone Orthopedic Center ### One address for your consultation, imaging, and surgery. Dr. Gomoll sees patients at the NYU Langone Orthopedic Center, 333 East 38th Street in Midtown Manhattan — a dedicated orthopedic facility with radiology in the same building, so the MRI he needs to plan your treatment can be done where you are already being seen. View Office Location Knee · 6 conditions 01ACL Tear A torn anterior cruciate ligament — common in pivoting and contact sports. Reconstructed with allograft or autograft to restore stability and return to play. 02Meniscus Tear Damage to the knee's shock-absorbing cartilage. Repaired, root-repaired, or transplanted to preserve the joint and prevent early arthritis. 03Cartilage Damage Focal cartilage defects that, left untreated, progress toward arthritis. Restored with transplant and regenerative techniques using your own tissue. 04Osteoarthritis Early to moderate joint degeneration. Managed with joint-preserving surgery and biologic options — delaying or avoiding replacement. 05Patellofemoral Pain Pain and instability behind the kneecap. Addressed with cartilage repair, realignment, and patellofemoral reconstruction. 06Knee Instability Recurrent giving-way from ligament or structural injury. Stabilized with reconstruction to protect the cartilage and meniscus. Shoulder · 2 conditions 07Rotator Cuff Tear Tears of the shoulder's stabilizing tendons. Repaired arthroscopically to restore strength, motion, and pain-free overhead function. 08Shoulder Instability Recurrent dislocation or looseness of the shoulder. Reconstructed to restore a stable, confident, full-motion joint. 01 / 08 Knee Surgery ### ACL Tear A torn anterior cruciate ligament — common in pivoting and contact sports. Reconstructed with allograft or autograft to restore stability and return to play. Learn about treatment Featured Podcast · The Joe Rogan Experience ### David Goggins on His Surgery with Dr. Gomoll Goggins discussed his high tibial osteotomy — performed by Dr. Gomoll at HSS — on the world's biggest podcast. Watch the episode Television · CBS News ### CBS News Feature Featured for the Cartiheal coral implant — a new treatment for cartilage defects in the knee. Honor · Recognition ### Top 1% Academic Surgeons Honored as one of the U.S. Top 1% Academic Orthopaedic Surgeons. Podcast · BraunPR ### BraunPR Podcast Discussed patellofemoral and cartilage disorders with Dr. Sabrina Strickland. See All Media & Press Real Results ## Before & After — Osteochondral Allograft An actual case from Dr. Gomoll's practice — an 18-year-old man with an osteochondritis dissecans (OCD) lesion in the trochlea of the knee, treated with osteochondral allograft transplantation. Before MRI before surgery — depressed cartilage defect with a loose fragment visible in the trochlea. After — 6 months MRI 6 months post-op — osteochondral allograft transplant almost completely integrated into the native bone. Read About Cartilage Repair Patient Stories ## In Their Own Words Real patients sharing real recovery stories — from cartilage transplants to ACL reconstruction and meniscus repair. Video Gianna Patient Transformation Story From a childhood unable to ice skate or keep up with friends, Gianna shares the multi-year transformation that brought her back to the activities she loves after surgery with Dr. Gomoll. Read & watch story → Video Partial Knee Replacement Partial Knee Replacement An athlete who played sports through high school and college talks about how aging injuries led to a partial knee replacement — and how he's feeling now. Read & watch story → Video Fresh Osteochondral Allograft Fresh Osteochondral Allograft Transplantation A lifelong CrossFit and football athlete describes the cartilage defect he sustained in high school football and the fresh osteochondral allograft transplantation that returned him to training. Read & watch story → See All Patient Stories Our Approach ## Preserve the Joint First. Replace It Only When You Must. Dr. Gomoll’s practice is built around a single conviction: a young, active joint should be restored, not discarded. That philosophy shapes every recommendation he makes. ### Joint Preservation Over Replacement When cartilage is damaged, the default in many practices is to wait until the joint wears out and then replace it. Dr. Gomoll’s focus is the opposite — using cartilage transplant and regenerative techniques to restore your own tissue and delay or avoid replacement, particularly in younger and athletic patients. ### Treat the Whole Joint, Not Just the Tear A cartilage defect rarely exists alone. Malalignment, meniscal deficiency, and instability all load the joint abnormally. Dr. Gomoll combines cartilage repair with realignment osteotomy and meniscal transplantation when needed — so the repair is protected, not set up to fail. ### Surgery Is the Last Step, Not the First Many knee and shoulder problems improve without an operation. Non-operative options are explored first, and second opinions are welcome. When surgery is the right answer, it is planned around your goals and your return to the activities you love. This approach is grounded in research, not marketing — Dr. Gomoll has authored more than 200 peer-reviewed publications and co-edited multiple textbooks on cartilage restoration and joint preservation. See the full curriculum vitae. Before You Visit ## Frequently Asked Questions Practical answers for new patients scheduling with Dr. Gomoll at NYU Langone in New York. Do I need a referral to see Dr. Gomoll? A referral is not required to request a consultation. Some insurance plans require a referral for coverage, so check with your insurer before your visit. You can request an appointment online or by calling (646) 917-7441. Does Dr. Gomoll see out-of-town or international patients? Yes. As a cartilage and joint-preservation subspecialist, Dr. Gomoll treats patients who travel to New York from across the country and internationally. Call (646) 917-7441 if you need help coordinating travel around your appointment. How soon can I be seen? Most new patients are seen within 1–2 weeks. Out-of-town and international patients are welcome — call (646) 917-7441 if you need help coordinating travel around your appointment. What should I bring to my first appointment? Bring a photo ID and your insurance card. Just as important, bring any outside imaging on a disk or CD — or the actual MRI or X-ray images, not only the written report. Dr. Gomoll needs to review the images themselves. You can also upload your imaging ahead of the visit. Where does Dr. Gomoll see patients? The office is at the NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor, New York, NY 10016, in Midtown Manhattan. See the locations page for a map, travel, and lodging information. Take the Next Step ## Ready to Schedule a Consultation? Dr. Gomoll sees patients at NYU Langone in New York. New patients can book online through NYU Langone or call our office directly. Schedule a Consultation ☎ Call (646) 917-7441 # Services ## Arthritis Surgery NYC: Partial Knee Replacement, MISHA, MAKO | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/arthritissurgery/ Summary: Arthritis surgery with Dr. Andreas Gomoll at HSS — robotic-assisted MAKO partial knee replacement, patellofemoral replacement, and the MISHA medial implantable shock absorber for medial knee arthritis. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School. Dr. Gomoll has performed partial knee replacements for over 20 years and helped refine the MISHA implantation technique through its FDA trial. View full credentials & CV → Arthritis surgery includes several options designed to treat pain and loss of function caused by compartment-specific knee arthritis. Dr. Gomoll offers robotic-assisted MAKO partial knee replacement for medial, lateral, and patellofemoral arthritis, as well as the MISHA® Knee System, an implantable shock absorber designed to reduce pressure on the affected compartment while preserving the natural joint. Overview ## What is knee arthritis surgery? Knee arthritis surgery is used to treat advanced arthritis that develops when the cartilage cushioning the joint has worn away, allowing bone to rub against bone. Although the knee functions as a single joint, it is made up of three compartments: the medial (inside), lateral (outside), and patellofemoral (behind the kneecap) compartments. Arthritis may affect one, two, or all three of these areas. Treatment depends on which compartments are involved, the condition of the ligaments, and the patient's activity level. When arthritis affects all three compartments, a total knee replacement is often the most appropriate option. When arthritis is limited to a single compartment and the remaining knee structures are healthy, a partial knee replacement may be a more joint-preserving alternative. For selected patients with medial compartment arthritis, the MISHA® Knee System may also be considered. Candidacy ## Who is a candidate for partial knee replacement or MISHA? Partial replacement candidates have: - Bone-on-bone arthritis confined to one compartment (medial, lateral, or patellofemoral) - Healthy or only mildly affected other compartments — confirmed on high-quality MRI - No symptomatic ligament instability - An active lifestyle and the desire to retain a more natural-feeling knee MISHA candidates have medial-compartment arthritis that is symptomatic but not yet advanced enough to require replacement — typically younger patients who would otherwise be candidates for an osteotomy or partial replacement, but want a reversible, less invasive option that delays definitive surgery for up to a decade. For more advanced cartilage damage that is not yet bone-on-bone, see our cartilage repair page. For meniscal-deficient knees, see meniscal transplantation. When Partial Replacement May Not Be the Right Choice: Partial knee replacement is not appropriate for everyone. Patients with arthritis affecting two or three compartments of the knee, significant knee instability, or advanced wear in the remaining compartments are generally better candidates for total knee replacement. Before considering surgery, conservative treatments are typically explored. These may include weight management, physical therapy, anti-inflammatory medications, bracing, and injections. Factors such as smoking, uncontrolled diabetes, and very high body weight can also increase surgical risk and may be worth addressing before elective surgery. During your consultation, Dr. Gomoll will review your imaging, symptoms, and goals to determine whether partial knee replacement, the MISHA® Knee System, total knee replacement, or continued non-surgical treatment is the most appropriate option for your knee. Techniques ## How arthritis surgery is performed Dr. Gomoll offers three compartment-sparing options, selected by which part of the knee is affected. ### Partial medial or lateral knee replacement If decision-making confirms that only one compartment requires replacement, Dr. Gomoll performs a partial replacement of just that compartment — preserving the other compartments and the patient's own ligaments. This is generally best for patients who are more active and attuned to their knee. A partial knee replacement feels more natural than a total replacement, with better range of motion. The trade-off: the unreplaced compartments may deteriorate over time, requiring eventual conversion to a total knee replacement (typically 10–20 years later). Dr. Gomoll uses a robotic-assisted technique (MAKO) to improve precision. A pre-op CT scan is converted to a 3D plan; the robot prepares the bone within the planned boundaries, the components are placed and cemented. Click here for more information on the MAKO partial replacement technique. Before Medial compartment bone-on-bone arthritis on the affected knee. After Same knee after medial partial replacement — only the affected compartment was resurfaced. ### Patellofemoral replacement If only the anterior (patellofemoral) compartment is arthritic, a partial replacement called patellofemoral replacement resurfaces the trochlea and patella, preserving the medial and lateral compartments and all ligaments. ABC News interviewed Dr. Gomoll on his patient being the first in the US to receive a custom patellofemoral implant for advanced patellofemoral arthritis. Patellofemoral replacement on the right; bone-on-bone patellofemoral arthritis on the left. ### Medial Implantable Shock Absorber (MISHA) A new treatment option for medial-compartment arthritis that is symptomatic but not advanced enough for replacement. The MISHA implant — developed over more than a decade of clinical trials — is a spring-based device placed extra-articularly (outside the joint capsule) on the medial side of the knee. It absorbs load and offloads the damaged medial compartment, improving pain and function. Recovery is faster than partial replacement — patients are typically off crutches within 2 weeks. The goal of the MISHA device is to delay knee replacement, ideally for up to a decade, after which it can be revised to either osteotomy or partial/total replacement without difficulty. Click here for further information on MISHA. Dr. Gomoll has worked with the MISHA company for over 10 years, helped refine the surgical technique, and participated in the device's FDA trial. See active clinical trials for related research. Choosing a procedure ## Partial replacement vs. total replacement vs. MISHA The right operation depends on how many compartments are arthritic, the condition of your ligaments, and how active you are. Partial replacement and MISHA preserve healthy tissue when only one compartment is involved; a total replacement is the durable answer for diffuse, multi-compartment arthritis. This table summarizes the trade-offs. Option Best suited for What is preserved Recovery pace Typical lifespan / goal Partial (unicompartmental) knee replacement — MAKO robotic-assisted Bone-on-bone arthritis confined to one compartment with intact ACL/PCL and healthy other compartments Your own ligaments and the unaffected compartments; feels more natural than a total Walking same day; crutches or walker initially to help with comfort and stability, transition to cane typically within 1–2 weeks Designed to last 10–20 years before potential revision to a total knee replacement Patellofemoral replacement Isolated arthritis of the anterior (kneecap) compartment only Medial and lateral compartments and all ligaments Similar to medial/lateral partial replacement Resurfaces only the trochlea and patella Total knee replacement Diffuse arthritis affecting two or three compartments, or a deficient ACL Resurfaces all compartments; most reliable for widespread arthritis Similar but slower than medial/lateral partial replacement The durable answer for multi-compartment disease designed to last 25 years or more MISHA medial implantable shock absorber Symptomatic medial-compartment arthritis not yet advanced enough for replacement, often in younger patients The entire joint — the device sits outside the joint capsule and removes nothing Fastest — typically off crutches within 2 weeks but rehab important to restore motion Aims to delay replacement up to a decade; reversible by removing the implant in a simple outpatient procedure; preserves the entire knee, allowing any future intervention, including osteotomy or replacement Why the distinction matters: a partial replacement or MISHA leaves your own ligaments and healthy cartilage in place, which most patients find feels more like a natural knee — but those options only work when the arthritis truly is confined to one compartment, which is why Dr. Gomoll obtains high-quality imaging of the other compartments before recommending them. Approach ## Dr. Gomoll's approach to knee arthritis surgery The central decision in arthritis surgery is how much of the knee actually needs to be replaced. For an active patient with bone-on-bone arthritis confined to a single compartment and intact ligaments, Dr. Gomoll favors replacing only that compartment — a partial knee replacement preserves the patient's own ACL, PCL, and unaffected cartilage and tends to feel more natural with better range of motion than a total replacement. To verify the diagnosis, a good-quality MRI is always obtained to assess the other compartments before a partial replacement is recommended, because the trade-off of a partial is that an unreplaced compartment can wear over time and eventually require conversion to a total. Robotic-assisted (MAKO) technique is used to improve the precision of component positioning from a CT-based 3D plan. For younger patients whose medial arthritis is symptomatic but not yet advanced enough for replacement, the MISHA shock absorber offers a less invasive, reversible option that aims to delay definitive surgery. Dr. Gomoll has performed partial knee replacements for over 20 years and helped refine the MISHA technique through its FDA trial — see active clinical trials for related research. Before surgery ## Preparing for arthritis surgery Pre-op evaluation includes standing X-rays of both knees (assessing alignment and joint-space narrowing), high-resolution MRI to confirm that the unaffected compartments are healthy, and a focused exam of ligament stability and range of motion. Standard pre-op stops apply: narcotics 14 days before, blood thinners and supplements 7–10 days before, nothing by mouth after midnight. See our before-surgery checklist. Comfort ## Anesthesia & staying comfortable Partial knee replacement is performed under spinal or general anesthesia, with long-lasting local anesthetic and occasionally also paired with a regional adductor-canal block that keeps the leg comfortable well after you wake up. You will meet your anesthesiologist before surgery to choose the approach that fits you. A regional adductor-canal block typically lasts about 6–8 hours and is designed to preserve enough quadriceps strength to begin walking the same day. Most partial-replacement and MISHA patients are discharged the same day or after a single overnight stay, move to oral pain medication within the first day or two, and rely on it for only the first 1–2 weeks. Worried about pain medication? The goal is a multimodal, opioid-sparing plan — the nerve block, anti-inflammatories, ice, and elevation do much of the work, so narcotics are used at the lowest effective dose for the shortest time rather than leaving you dependent on them. The full pain-control timeline is in our after-surgery instructions, and bracing and cold-therapy options are covered on our bracing & ice machine page. Honest answers ## Common concerns about knee arthritis surgery #### "Will my insurance cover it?" Partial and total knee replacement are established procedures generally covered when medically necessary. MISHA is FDA-cleared; coverage varies by plan and may require pre-authorization, which Dr. Gomoll's administrative team manages before surgery. #### "Recovery will take forever." Partial replacement is a faster recovery than a total — many patients are walking the same day, off the walker within two weeks, and back to recreational sport in moderation by 3–6 months. MISHA patients are often off crutches within 2 weeks. #### "I'm afraid of the pain." A regional nerve block and a multimodal, opioid-sparing protocol mean most patients report markedly less pain than the bone-on-bone arthritis they came in with. Dr. Gomoll will walk you through the plan at your consultation. Informed decision ## Risks to understand Partial knee replacement and the MISHA implant have strong track records, but like any surgery they carry risks you should weigh with Dr. Gomoll before deciding. These can include infection (including periprosthetic joint infection), blood clots (DVT/PE), stiffness, implant loosening or wear over time, periprosthetic fracture, and progression of arthritis in the unreplaced compartments — which can eventually require conversion of a partial to a total knee replacement. Device-specific risks of the implants and ordinary anesthesia risks (such as nausea or, rarely, cardiac or respiratory events) are also discussed before surgery. No knee procedure is a guaranteed permanent fix. These operations are designed to relieve pain and restore function — modern partial implants are designed to last 10–20 years — but longevity and outcome depend on which compartments are involved, alignment, body weight, activity level, and how closely you follow the rehabilitation protocol. Dr. Gomoll will review the specific risks and realistic expectations for your knee at your consultation. Technology ## Materials & technologies we use - MAKO robotic-arm assisted system — CT-based 3D planning and intra-operative robotic precision for component positioning - Cobalt-chromium-molybdenum femoral and tibial baseplate components with polyethylene articular surface - MISHA implantable shock absorber — FDA-cleared spring-based extra-articular device - Patellofemoral replacement — custom or off-the-shelf trochlear and patellar components for isolated anterior compartment arthritis - HSS imaging — standing alignment films and 3T MRI for surgical planning Recovery ## Follow-up & long-term outcomes #### Partial knee replacement (MAKO) Walking same day with walker/crutches, cane within 1–2 weeks, driving by 4 weeks (sooner for left knee), recreational sport at 3–6 months. Implants typically last 10–20 years before potential revision. #### Patellofemoral replacement Similar timeline to medial/lateral partial replacement. #### MISHA Off crutches within 2 weeks, return to most activities by 6–8 weeks. Goal is to delay definitive replacement up to a decade. Detailed PT plans for partial replacement and MISHA are downloadable on our knee rehab protocols page. General recovery FAQs are on our after-surgery page. Real outcomes ## Patient outcomes & press coverage - Partial knee replacement — patient testimonial — a single-compartment arthritis patient treated with partial replacement rather than a total - Jennifer — HTO + ACL reconstruction — a realignment osteotomy in an active patient, the joint-preserving alternative to early replacement that informs treatment selection - ABC News — first US patient to receive a custom patellofemoral implant — press feature - Dr. Gomoll on the Joe Rogan Experience with David Goggins — HTO discussion (alternative to early partial replacement) - Documented intra-operative cases — cartilage and joint-preservation cases that informed treatment selection More written outcomes are on our patient testimonials page. Common questions ## Frequently asked questions How long does partial knee replacement surgery take? Robotic-assisted partial knee replacement (MAKO) typically takes 60–90 minutes. The MISHA medial implantable shock absorber takes about 60 minutes. Is partial knee replacement painful? Performed under spinal or general anesthesia, often with a regional adductor-canal block lasting 6–8 hours. Most patients are discharged the same day or next morning. MISHA recovery is more accelerated than partial replacement — patients are typically off crutches within 2 weeks. Am I a candidate for partial vs. total knee replacement? It depends on which compartments are arthritic. The knee has three compartments — medial (inner), lateral (outer), and patellofemoral (anterior). If only one compartment is bone-on-bone and the others are healthy, partial replacement preserves your own ligaments (ACL, PCL) and the unaffected cartilage. Dr. Gomoll always obtains a high-quality MRI to assess the other compartments before recommending partial replacement. What materials are used? Partial knee implants are typically a combination of cobalt-chromium-molybdenum femoral component, polyethylene tibial insert, and titanium tibial baseplate. The MAKO robot uses your CT-based 3D plan for precise component positioning. The MISHA implant is a small spring-based device placed extra-articularly to offload the medial compartment. How long does a partial knee replacement last? Modern partial knee implants are designed to last 10–20 years before potentially needing revision to a total knee replacement; longevity depends on activity, weight, and individual factors. During that time they tend to function more naturally than total replacements — in moderation, most patients can return to tennis, skiing, golf, and gym activities. Is partial knee replacement outpatient or inpatient? Robotic-assisted partial knee replacement and the MISHA implant are most often performed as outpatient surgery or with a single overnight stay at the Hospital for Special Surgery in New York. The exact plan depends on the procedure, your anesthesia, and your medical history, and is confirmed before your surgery date. When can I return to work and sport after partial knee replacement? Many patients with desk-based work return within 1–2 weeks while still using a cane; physically demanding jobs take longer. Recreational sport such as tennis, golf, and skiing in moderation is typically resumed by 3–6 months. MISHA recovery is faster — patients are usually off crutches within 2 weeks and back to most activities by 6–8 weeks. These are general ranges; your timeline depends on the procedure and your rehabilitation. When can I drive after partial knee replacement? Driving generally resumes by about 4 weeks for a right (operative) knee — sooner for a left knee with an automatic transmission — once you are off narcotic pain medication and can safely control the pedals. Confirm timing with Dr. Gomoll, and see our after-surgery instructions for the recovery milestones. Does insurance cover partial knee replacement and MISHA? Partial and total knee replacement are established procedures generally covered by insurance when medically necessary. The MISHA implant is FDA-cleared; coverage varies by plan and may require pre-authorization. Dr. Gomoll's administrative team handles approval — schedule a consultation for a personalized plan and a benefits check. Dr. Gomoll evaluates and treats knee arthritis at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients from across New York City, the tri-state area, and beyond who want a compartment-sparing or joint-preserving option rather than moving straight to a total knee replacement. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Considering knee replacement or MISHA? Schedule a consultation to determine which compartment(s) are involved and whether partial replacement or MISHA is right for you. Schedule a Consultation Call 646-917-7441 --- ## Before Surgery: Patient Preparation Guide | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/before-surgery/ Summary: How to prepare for orthopedic surgery with Dr. Andreas Gomoll at NYU Langone — insurance approval, what to bring, medications to stop, and pre-op checklist for knee, shoulder, and elbow procedures. To prepare for surgery with Dr. Gomoll, stop narcotics 14 days before your procedure, blood thinners and supplements 7–10 days before, and do not eat or drink after midnight the night before. Arrange a ride home, bring a photo ID and insurance card, wear loose clothing, and expect a confirmation call from the surgical facility the day before with your arrival time. Step 1 ## Insurance approval Your insurance approval is handled entirely by Dr. Gomoll's administrative assistants and surgical schedulers. In most cases you do not need to do anything — the administrative assistant will contact you to confirm approval. For more complex procedures such as cartilage repair or meniscal transplantation, appeals are sometimes required. The administrative assistant will guide you through that process. About "experimental" denial letters: insurers often cite "experimental" as a reason for denial. This means they lacked information or disagreed with Dr. Gomoll's justification — not that the procedure is experimental. Most approvals are valid for 6 months to 1 year. Step 2 ## When you'll learn your surgical time The surgical facility will call you the day before your procedure to confirm your arrival time. If you haven't heard by late afternoon: - Dr. Gomoll's office: 646-917-7441 Traveling from out of town? Give the hospital your cell phone number and the address where you'll be staying the night before surgery so they can reach you with your arrival time. Step 3 ## How to prepare - Nothing to eat or drink after midnight the night before your procedure - Arrange a family member or friend to accompany you to the hospital and drive you home - Plan transportation for the day of discharge (home or hotel) - Adjust your work and social schedule for the recovery period - Arrange transportation for your first follow-up — you cannot drive while on narcotic pain medication - Expect your first post-op visit 10–14 days after surgery — see after-surgery instructions Step 4 ## What to bring - Photo ID - Insurance card - A companion who will stay the entire time and take you home - Comfortable, loose clothing — zip-up or button-down for shoulder/elbow surgery; loose pants or shorts for knee surgery - Leave jewelry, money, and valuables at home Review the bracing and ice-machine guide before surgery day so you have the correct equipment ready for the trip home. Step 5 — Critical ## Medications to stop before surgery Follow this timeline carefully. Stopping at the wrong time increases your bleeding risk or anaesthesia complications. 14 days before — STOP - Vicodin / Norco - Darvocet / Percocet - Oxycontin - All narcotic pain medications 7–10 days before — STOP - Plavix / Coumadin / Warfarin - Prescribed Aspirin - Advil / aspirin-like NSAIDs - Turmeric, fish oil, vitamin E OK to continue - Tylenol (acetaminophen) Morning of surgery - Heart meds (hypertension, arrhythmia) with a small sip of water - Bring your inhaler if applicable - Check with internist about diabetic medications For any medication not listed above, consult your internist and Dr. Gomoll's office before stopping. Never discontinue a prescribed blood thinner without medical guidance. Resources ## Additional information - Imaging — what to bring: bring your outside MRI/X-ray images on a disk so Dr. Gomoll can review them before surgery - Day of surgery: check-in, pre-op holding, and anesthesia — what to expect - NYU Langone Orthopedic Center — getting here, parking & visitor information For questions specific to your procedure see surgical procedures explained or contact our office directly. Common questions ## Frequently asked questions Can I take vitamins or herbal supplements before surgery? Stop turmeric, fish oil, and vitamin E 7–10 days before surgery — these increase bleeding risk. For any other supplements consult Dr. Gomoll's office and your internist. What if I have a cold, fever, or infection before surgery? Call Dr. Gomoll's office at 646-917-7441 immediately. Active infections may require rescheduling. Do not arrive at the hospital without notifying us first. Can I drive myself home after surgery? No. Anesthesia and pain medication make driving unsafe for at least 24 hours. While on narcotic pain medication you cannot drive at all — arrange transportation for your first follow-up visit too. How long is my insurance approval valid? Most approvals are valid for six months to one calendar year from the approval date. Dr. Gomoll's schedulers will confirm approval before your surgical date — you do not need to coordinate this yourself. Will I see Dr. Gomoll or a PA at my first post-op visit? Either may see you depending on the procedure and your preference. Both are fully familiar with your case. Your first follow-up is typically 10–14 days after surgery — see after-surgery instructions. ## Questions about your upcoming surgery? Dr. Gomoll's team is here to help you prepare. Reach out by phone or schedule a pre-operative consultation. Schedule a Consultation Call 646-917-7441 --- ## Bracing & Ice Machine: Cymedica Evive + GameReady | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/bracing-ice-machine/ Summary: How to use the post-operative Cymedica Evive brace with e-stim and the GameReady cooling device — instructional videos for fitting, range of motion, stim, and cold therapy. After knee surgery, Dr. Gomoll's patients commonly use the Cymedica Evive brace with e-stim and the GameReady cooling device to support recovery. Below are the official instructional videos for fitting, range of motion, e-stim use, and cold-therapy use. See our post-op instructions for guidance on when to wear your brace. Brace & muscle stim ## Cymedica Evive brace and e-stim The Cymedica Evive brace combines a knee brace with electrical muscle stimulation (e-stim) to help maintain quadriceps strength during early recovery. Watch all five videos before your first use: ### CyMedica Evive brace — product review ### CyMedica Evive — fitting and securing the garment Transcriptthe garment is positioned and applied by sitting with the injured leg extended either on the floor bed or chair place the garment underneath your leg with the round hole position directly behind your knee and the blue surface on the inside of your thigh to secure the garment wrap the blue electrode panel on the inside of your leg around the top of your thigh tighten the outer garment flaps beginning with the flap just above your knee pull flap tight and firmly attached to the garment panel continue securing each garment flap for best fit secure each garment flap in the order shown beginning with the flaps closest to the knee then proceeding outwards the garment should be comfortable and snug against your leg retighten panels as needed ### CyMedica Evive — instructions for use (ROM), part 1 Transcriptin addition to electrical stimulation the eve I've system incorporates range of motion sensing technology the range of motion test is easy to perform and will allow you and your healthcare provider to track your rehabilitation progress against your goals once daily you will be prompted to perform a range of motion tests to begin the range of motion test first be seated at the edge of the seat in a chair where your knee can extend and Bend comfortably it is important that the garment be adequately secured to your leg as described in previous videos for accurate range of motion readings it is important that the blue stitching on the top of the thigh area on the garment be aligned with the middle of your thigh similarly the blue stitching on the bottom area of the garment below the knee should be aligned with the center of your shin adjust the garment is needed for proper orientation after pressing the pink start test button slowly extend and flex your leg to the extents that you can achieve it is important to not overexert your range of motion beyond your comfort limits and to follow any instructions that your doctor may have provided to you the knee image on the app will show the angle of your knee once the limits accurately reflect the range of motion that you feel you can achieve hit the capture button that's it you're done if the readings don't seem accurate you can always reset the values by selecting reset or test again by pressing the pink done button you can return to the home screen where you can view all of your daily weekly and monthly range of motion results ### CyMedica Evive — instructions for use (ROM), part 2 Transcriptonce you have selected your treatment type you will then set the stimulation intensity for your knee and thigh areas the color dot on the garment picture is the zone controlled by the same colored control gauge while the II vibe is adjusting many of the stimulation factors to ensure a more comfortable experience you have ultimate control over the intensity of the stimulation level intensity can range from a setting of zero to 100 the higher the intensity value the more powerful the stimulation signals sent to your muscles to trigger the therapeutic muscle contraction effectively exercising your muscles to set the intensity level press the plus button to increase intensity until a strong but comfortable muscle contraction is achieved while the sensation of muscle activation may be unusual it should not be painful or very uncomfortable many describe it as a mild tingling or buzzing feeling if the intensity is too strong press the minus button until the more comfortable contraction is achieved repeat this process for both the knee and thigh muscle areas note that it is common to have different intensity levels for both the knee and thigh muscle areas additionally as your body changes your intensity levels may differ between muscle activation sessions even in the same day set the intensity that is most appropriate for each session having selected a strong but comfortable intensity for both muscle groups press the start treatment button to begin your 20-minute treatment session the treatment screen will display the remaining time as well as allow you to change the intensity levels for either muscle area depending on the treatment type the e vive will alternate between periods of activation and periods of rest at any time you may press the red pause button at the bottom of the app to interrupt the treatment program press the orange play icon triangle to resume the app when ready to restart your treatment session you may terminate your therapy session at any time by pressing the orange stop X icon on the screen alternatively you may press the power button on the eve ive controller at any time during a stimulation session to pause the stimulation pressing the button again will resume the session you can press and hold the controller power button for a few seconds to shut down the system at the end of your 20-minute session the stimulation session will automatically stop you will be prompted again to rate your level of pain and the comfort of the stimulation therapy remove the garment from your leg by unstrapping the flaps reapply the provided electrode covers in order to maximize the life of the electrode ### CyMedica Evive — instructions for use (e-stim) Transcriptwhen you are ready to begin your 20-minute muscle activation therapy session remove the electrode covers from the garment exposing the sticky hydrogel surface of the electrode the electrode should be clean undamaged and tacky enough to stick to your skin for best results apply a pea-sized amount of electro gel to your skin where the electrodes will rest the electro gel helps transmit the muscle activation signal between electrode and your muscle minimizing signal dissipation and discomfort position the garment under your leg ensuring proper alignment of the electrodes to your thigh muscles secure the garment flaps by pulling the electrode panel over your thigh and tightening the flaps from the dashboard screen you can press the top daily stimulation session logo or the stimulation session logo from the bottom menu bar press the get started button when you are ready once daily you will be prompted to rate your current level of pain simply slide the circle with your finger to the appropriate level of pain and then press Start stimulation your eve I've app will display a screen asking you to select your stimulation treatment type two types of treatments are displayed post-op and strength select the treatment prescribed by your doctor often post-op is used in the weeks immediately after surgery reawakening your atrophied muscles strength is then used throughout your rehab program to strengthen your thigh muscles without stressing the healing tissues in your knee Cold therapy ## GameReady cooling device GameReady combines compression and circulating cold water to reduce post-operative swelling and pain. Use as directed by your surgical team — typically immediately after surgery and during early rehab. ### GameReady — clinical benefits TranscriptThe powerful Game Ready system provides optimal therapeutic benefits following injury or surgery. The dual action wrap combines cryotherapy with intermittent compression. These actions together help reduce fluid and limit bleeding within the joint that can cause pain and swelling. At the tissue level, blood vessels constrict and fluid outflow into the interstitial space is reduced. Cryotherapy can reduce the number of white blood cells that migrate to the injury or surgical site, reduce the release of inflammatory chemicals, and help slow down the conduction of pain nerve signals. In combination, these therapeutic benefits reduce pain and swelling and help lower opioid use. To learn more about the Game Ready system, visit us at gameready.com. ### GameReady — how-to use demo Transcriptwelcome to the game ready demonstration video game ready uses Axel technology to apply cold and active pneumatic compression therapy designed to help you recover from your injury or surgery as quickly as possible this video will demonstrate how to set up and use your game ready unit game ready has five main system components plus the user's manual the control unit this holds the ice and water and delivers the cold and active compression to the wraps it allows you to set compression and temperature levels as well as treatment duration the wrap the wrap facilitates the delivery of active compression and cooling to your injury or surgery site the connector hose this connects the wrap to the control unit and transfers air and water to the wrap the AC adapter power cord this provides power to the unit the user manual the user manual provides detailed instructions and troubleshooting information setting up the control unit open the lid notice the fill line labels inside the reservoir fill the control unit with water as indicated next fill the control unit with ice as indicated close the lid connect the AC adapter to the control unit then plug into a grounded three prong electrical outlet place the system on a sturdy surface and away from any foot traffic see your user manual for additional electrical and other safety cautions check to make sure the green light on the AC adapter and the orange light on the control unit are on the lights indicate the unit has power connect the larger end of the connector hose with a red button to the control unit make sure you hear it Click put the wrap on so that it is snug yet comfortable and ensuring there are no Kinks which may impede water flow connect the smaller end of the connector hose with the blue button to the wrap make sure you hear it click operating the control unit once you have the control unit set up press power you will see the display light up the program key is available for the preset treatment protocols programs 1 to three provide treatment for 30 minutes and then turn off or sleep for 30 minutes the compression levels are no compression low or medium compression respectively programs 4 to six provide 30 minutes of treatment and then turn off or sleep for 60 minutes at no compression low or medium compression respectively press the program key once to get to program one press it twice to get to program two and so on continue pressing the program key until the end of the preset modes to get back to manual mode to use the system at the pressure level and treatment duration of your choice use the manual mode default manual mode is low pressure for 15 minutes to adjust time press the plus key or minus key time can be increased or decreased in 5 minute increments pressing the pressure button increases compression the first press will increase the pressure from the default of low to medium the second press will increase the pressure to high turn the pressure off by pressing the pressure key three times a few other important comments if you need to pause treatment and take the wrap off for any reason be sure to pause the treatment first by pushing the play pause button when you return simply push play pause again to change the time pressure or the program Choice during a treatment push the play pause button make your adjustments and then push play pause again to resume treatment once you have selected your program press play water will begin to circulate in the wrap and air will fill the wrap you'll begin to feel the cooling treatment and gentle squeezing set to your target temperature by turning the knob for the coldest therapy turn the knob clockwise towards three snowflakes for warmer therapy turn the knob counterclockwise towards one snowflake stop your treatment immediately and contact your care provider if you ever experienced numbness burning itching or increased pain you may notice that ice melts rapidly when you first start using game ready immediately after your surgery or injury your injury site produces higher amounts of heat than later in the recovery process as game ready transfers this heat into the ice bath through the circulating of cold water the ice melts faster troubleshooting please review your user manual or call our customer service department at 1888 426 3732 for all troubleshooting instructions thank you for choosing game ready to help facilitate your recovery we would love to hear about your experience with our product or service please call us at 1888 426 3732 and speak to our customer service department be sure to visit our website at gam ready.com to learn more about how gam ready can help aid your recovery Ordering / deliveries of the GameReady ice machine: ask the front desk at your pre-op visit, or call the office at 646-917-7441 and we'll connect you with our equipment vendor. Patient Information ## Related recovery resources - Before surgery checklist — what to bring on your surgical date - Day of surgery — check-in, pre-op holding, and anesthesia at HSS - After surgery FAQs — recovery timelines, pain control, return-to-activity - Rehab protocols — phase-by-phase PT plans for knee and shoulder procedures ## Need help with your brace or ice machine? Call our office for guidance on fitting, settings, or troubleshooting. Contact the Office Call 646-917-7441 --- ## Cartilage Repair Procedures NYC | Andreas H. Gomoll, MD | HSS Source: https://andreasgomollmd.com/cartilage-repair/ Summary: Cartilage repair surgery with Dr. Andreas Gomoll at HSS — autologous chondrocyte implantation (MACI), osteochondral allograft transplantation (OCA), OATS / mosaicplasty, microfracture, and stem-cell transplantation for focal cartilage defects of the knee. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery at Weill Cornell Medical College and Attending Surgeon at Hospital for Special Surgery (HSS) in New York. Dr. Gomoll is one of the nation's leading experts in cartilage restoration, knee preservation, and complex knee reconstruction. View full credentials & CV → Medically reviewed by Andreas H. Gomoll, MD — board-certified orthopedic surgeon, knee & shoulder. Last reviewed April 2026. Cartilage repair helps restore damaged cartilage in the knee, relieve pain, improve function, and protect the joint from further wear. Cartilage injuries can result from sports injuries, accidents, repetitive stress, or conditions such as osteochondritis dissecans (OCD). Dr. Gomoll offers some of the most advanced cartilage restoration procedures available, including MACI, osteochondral allograft transplantation (OCA), OATS, Cartiheal, DeNovo cartilage repair, and select stem-cell therapies through FDA-approved clinical trials. Every treatment plan is customized based on the size, location, and severity of the cartilage damage. With more than 20 years of experience in cartilage restoration, Dr. Gomoll has performed over 1,000 MACI and OCA procedures. He also participated in the clinical research and FDA studies that helped bring many of these advanced treatments to patients across the United States. Overview ## What is cartilage repair? Cartilage is the smooth tissue that covers the ends of bones where they meet to form a joint. In the knee, it allows the femur, tibia, and patella to move smoothly against one another during everyday activities. Cartilage can be damaged by an injury, such as a sports injury, dislocation, or fall, by developmental conditions such as osteochondritis dissecans (OCD), or through gradual wear over time. A localized area of cartilage damage is called a focal cartilage defect, while more widespread cartilage loss is known as osteoarthritis. Cartilage repair surgery is used to treat focal cartilage defects by restoring the damaged area of cartilage. The goal is to restore the joint surface and help delay or prevent progression to osteoarthritis. Patients with widespread bone-on-bone arthritis may be better candidates for other arthritis treatment options. Candidacy ## Who is a candidate for cartilage repair? Most candidates have a focal cartilage defect visible on MRI, along with symptoms such as catching, locking, or pain during activity. Ideally, the ligaments and meniscus are healthy, although cartilage repair can often be combined with procedures to address these structures when needed. Dr. Gomoll evaluates four key factors when determining the best treatment approach: 01 ### Defect Size & Depth The size and depth of the cartilage injury help determine which procedure is most appropriate. Smaller defects may be treated with DeNovo, OATS, or Cartiheal, while larger defects often require MACI or an osteochondral allograft. 02 ### Bone Involvement In some patients, damage extends beyond the cartilage and into the underlying bone. When this occurs, an osteochondral allograft can restore both the bone and cartilage in a single procedure. 03 ### Alignment The alignment of the leg affects how weight is distributed across the knee. Significant bow-legged (varus) or knock-kneed (valgus) alignment can place excess stress on the repair site. In these cases, an osteotomy may be recommended to protect the cartilage repair. 04 ### Meniscal Status The meniscus acts as a shock absorber within the knee. If a significant portion of the meniscus is missing or damaged, a meniscal transplant may be recommended to improve the long-term durability of the cartilage repair. Techniques ## How cartilage repair is performed Dr. Gomoll offers several advanced cartilage restoration procedures. The best option depends on the size, location, depth, and characteristics of the cartilage injury. 01 Autologous Chondrocyte Implantation (MACI) Age-restricted by YouTube — watch on YouTube MACI is a two-stage procedure used to treat larger cartilage defects. During the first procedure, a small cartilage sample is collected arthroscopically. The cartilage cells are then grown in a specialized laboratory and placed onto a collagen membrane. Several weeks later, the membrane is implanted into the damaged area, where it helps restore the cartilage surface. 02 Osteochondral Allograft (OCA) Transplantation OCA uses donor cartilage and bone to repair larger cartilage injuries. The graft is carefully matched to the size of the defect and implanted into the damaged area. This procedure is particularly useful when both the cartilage and underlying bone have been affected. 03 Particulated Cartilage Allograft (DeNovo) DeNovo uses donor cartilage tissue to treat smaller cartilage defects. It is commonly used for cartilage injuries involving the kneecap (patella) and other smaller focal defects. Before Large cartilage flaps in the patella. Finished graft Appearance after preparation of the defect with removal of all damaged cartilage tissue and filling with the DeNovo tissue graft. 04 Autologous Osteochondral Transfer (OATS) OATS uses healthy cartilage and bone from a less weight-bearing area of your own knee to repair a damaged area. Because it uses your own tissue, donor tissue is not required. This procedure is generally best suited for smaller cartilage defects. 05 Microfracture / Subchondral Drilling Microfracture and subchondral drilling stimulate the body's natural healing response by creating small openings in the bone beneath the cartilage defect. This allows healing cells to enter the area and form repair tissue. These procedures are typically reserved for smaller cartilage injuries. 06 Umbilical Cord Mesenchymal Stem-Cell Transplantation (Cartistem® — Investigational) Cartistem is an investigational cartilage restoration technique being studied through FDA-supervised clinical trials. The procedure combines specialized stem cells derived from donated umbilical cord blood with a supportive matrix that is placed into the cartilage defect to encourage cartilage repair. 07 Cartiheal Agili-C An FDA-approved coral-based implant for small or oblong cartilage defects — including knees with mild degenerative changes that are otherwise not suitable for traditional cartilage repair. The Cartiheal Agili-C implant is made from sea coral, which is very similar to human bone in structure and composition. After it is implanted into the prepared defect, the coral scaffold gradually turns into bone while regenerating cartilage repair tissue on the surface. Because it is performed in a single stage, it does not require the two separate surgeries that staged techniques such as MACI involve. See the CBS New York story on Dr. Gomoll's use of the coral implant → Before Full-thickness cartilage defect in the trochlea. 1 year after Second-look arthroscopy 1 year after Cartiheal implantation demonstrates healed tissue. ### Imaging — before and after osteochondral allograft Before MRI of an OCD lesion in the trochlea (circled, depressed defect with loose fragment) in an 18-year-old man. 6 months after Same area 6 months after osteochondral allograft transplantation — the transplant is nearly fully integrated with native bone. For an additional patient-information sheet: Osteochondral allograft transplantation handout (PDF). For a procedure video: osteochondral allograft transplantation video. Choosing a technique ## Comparing the cartilage-repair techniques There is no one-size-fits-all solution for cartilage damage. The best procedure depends on the size and location of the defect, whether the underlying bone is involved, and your individual goals and activity level. The table below provides a general overview of the most commonly used cartilage restoration techniques. Technique Best suited for Tissue used Staged? Repair tissue Microfracture / subchondral drilling Smaller defects (generally under ~2 cm²) None — your own bone-marrow elements No — single arthroscopic procedure Fibrocartilage (weaker than native cartilage) MACI (autologous chondrocyte implantation) Larger defects on the femoral condyle, trochlea, or patella with healthy underlying bone Your own chondrocytes grown on a collagen membrane Yes — two procedures, 4–6 weeks apart Hyaline-like cartilage Osteochondral allograft (OCA) Larger defects, especially when the bone beneath the cartilage is also damaged (e.g. advanced OCD) Size-matched donor bone and cartilage (no anti-rejection medication needed) No — single procedure Mature donor hyaline cartilage OATS / mosaicplasty Small-to-mid defects where enough graft can be harvested Your own osteochondral plugs from a less weight-bearing area of the same knee No — single procedure Your own hyaline cartilage Cartiheal Agili-C Small or oblong defects, even in the setting of mild osteoarthritis Sea coral, which is very similar to human bone in structure and composition — it turns into bone while regenerating cartilage repair tissue No — single procedure Hyaline-like cartilage Umbilical-cord MSC transplant (Cartistem® — investigational) Selected patients enrolled in the FDA-supervised clinical trial Umbilical-cord-blood mesenchymal stem cells mixed with hyaluronan No — single procedure Cartilage matured from implanted stem cells Why the Distinction Matters: Not all cartilage repair procedures produce the same type of repair tissue. Microfracture stimulates the body to form fibrocartilage, while procedures such as MACI, OCA, and OATS are designed to restore cartilage that more closely resembles the knee's natural cartilage. This is one reason why larger defects and injuries involving the underlying bone often require a graft-based procedure rather than microfracture alone. Approach ## Dr. Gomoll's approach to cartilage repair The most important decision in cartilage repair is choosing the right procedure for the specific defect. For smaller cartilage defects with healthy underlying bone, subchondral drilling is often a good starting point because it is a minimally invasive arthroscopic procedure performed in a single surgery. However, not every defect can be treated this way. When the damaged area is larger, or when the bone beneath the cartilage is also affected — as is often the case in advanced osteochondritis dissecans (OCD) — an osteochondral allograft is often preferred because it restores both the cartilage surface and the underlying bone in a single procedure. Dr. Gomoll also treats the entire knee, not just the cartilage defect. Problems such as poor alignment, meniscus deficiency, or ligament instability can place extra stress on a cartilage repair and reduce its long-term durability. When necessary, procedures such as an osteotomy or meniscal transplant may be performed at the same time to create the best environment for healing. The goal of joint preservation is to restore and protect the patient's natural joint surface, helping to delay or avoid joint replacement whenever possible. Before surgery ## Preparing for cartilage repair surgery Pre-operative preparation includes high-resolution MRI (preferably HSS quality — see our imaging page), a focused clinical exam, and review of medical history and prior knee surgery. Patients stop narcotics 14 days before surgery and blood thinners or supplements that increase bleeding risk 7–10 days before. Nothing by mouth after midnight on the surgical date. Insurance pre-authorization is handled by Dr. Gomoll's administrative team — see our before-surgery checklist for the full pre-op timeline. For day-of-surgery logistics, see what to expect on the day of surgery. Comfort ## Anesthesia & staying comfortable Cartilage repair is performed under general or spinal anesthesia, usually paired with a regional nerve block that keeps the leg numb well after you wake up — so most patients are surprised how manageable the first day is. You will meet your anesthesiologist before surgery to choose the approach that fits you. A regional block typically lasts about 6–8 hours after the procedure, smoothing the transition home. Most cartilage-repair procedures are outpatient or a single overnight stay, and most patients move to oral pain medication within the first day or two and rely on it for only the first 1–2 weeks. Worried about pain medication? The goal is to control pain with the lowest effective amount of medication for the shortest time, supported by ice, elevation, and the nerve block — not to leave you dependent on opioids. The exact plan and timeline are in our after-surgery instructions, and bracing and cold-therapy options are covered on our bracing & ice machine page. Informed decision ## Risks to understand Cartilage repair is a joint-preservation surgery with a strong track record, but like any operation it carries risks you should weigh with Dr. Gomoll before deciding. Depending on the technique, these can include infection, blood clots (DVT/PE), knee stiffness or arthrofibrosis, incomplete graft integration or failure of the repair to fill the defect, and progression of arthritis over time. Marrow-stimulation techniques such as microfracture form fibrocartilage that is biomechanically weaker than native cartilage and can break down in larger or high-demand defects. The umbilical-cord stem-cell technique is investigational and does not have a guaranteed outcome. No cartilage procedure is a guaranteed permanent fix. These techniques are designed to relieve pain, restore the joint surface, and delay or avoid joint replacement — but results depend on defect size and location, alignment, body weight, activity level, and how closely you follow the rehabilitation protocol. Dr. Gomoll will review the specific risks and realistic expectations for your knee at your consultation. Technology ## Materials & technologies we use - Vericel MACI — FDA-approved autologous chondrocyte implantation system using your own cartilage cells grown on a porcine collagen membrane - Fresh osteochondral allograft from FDA-regulated tissue banks — size-matched donor bone-and-cartilage cylinders - Smith & Nephew Cartiheal Agili-C coral implant — FDA-approved cartilage-repair implant for the treatment of patients with mild degenerative changes otherwise not suitable for cartilage repair. See an interview with Dr. Gomoll regarding its use. - Cartistem® — umbilical-cord-blood mesenchymal stem cells (FDA-supervised clinical trial) - Arthroscopic instrumentation — high-definition fiber-optic camera, motorized shavers, dedicated cartilage-prep instruments - HSS imaging — high-resolution 3T MRI for defect mapping and surgical planning Recovery ## Follow-up & long-term outcomes Recovery depends on the technique: #### Microfracture / subchondral drilling 6 weeks protected weight-bearing on crutches; 6–12 weeks PT focused on early range of motion and progressive loading. #### MACI 6–8 weeks non-weight-bearing or partial weight-bearing after the implantation procedure; phased PT advancing over 6–12 months. #### Osteochondral allograft 6–8 weeks protected weight-bearing while bone integrates; PT phases advance over 6–9 months; full activity by 9–12 months. #### OATS Early range of motion, partial weight-bearing for 4–6 weeks, return to sport by 6–9 months. Detailed phase-by-phase PT plans for each technique are downloadable on our knee rehab protocols page. General recovery timelines (driving, work, showering) are on our after-surgery FAQ. Real outcomes ## Documented case studies from our practice Real cartilage-repair cases with intra-operative photographs, technique rationale, and outcomes: - Patrick — back racing Ironman after a cartilage transplant — osteochondral allograft plus cadaver ACL reconstruction in an endurance athlete who had been told he needed a knee replacement - Pamela — osteochondral allograft transplantation — a joint-preserving OCA for a focal knee cartilage defect, chosen over early knee replacement - Fresh osteochondral allograft — CrossFit & football athlete — a recurrent defect after a failed reattachment, definitively treated with a size-matched donor plug - Subchondral drilling case (intra-operative) — a focal defect in the medial femoral condyle treated with marrow-stimulation drilling - Umbilical-cord MSC implantation case (intra-operative) — a medial femoral condyle defect treated with mesenchymal stem cells from umbilical-cord blood (Cartistem® trial) More written outcomes are on our patient testimonials page. Common questions ## Frequently asked questions How long does cartilage repair surgery take? It depends on the technique. Microfracture / subchondral drilling is the fastest (often performed during a diagnostic arthroscopy and adding 30–45 minutes). MACI is staged across two procedures separated by 4–6 weeks. Osteochondral allograft transplantation typically takes 1–2 hours depending on defect size and location. Is cartilage repair painful? Procedures are performed under general or spinal anesthesia, often combined with a regional nerve block that lasts 6–8 hours after surgery. Most patients are discharged the same day or next morning and use oral pain medication for the first 1–2 weeks. See our after-surgery instructions for the typical pain-control timeline. Am I a candidate for cartilage repair? Candidates typically present with a focal cartilage defect (a localized area of damage) rather than diffuse arthritis. Dr. Gomoll uses high-resolution MRI — preferably from HSS — to assess defect size, depth, location, and surrounding bone integrity. Patients with significant malalignment may need a concurrent osteotomy; patients with bone loss may need an osteochondral allograft instead of a soft-tissue technique like MACI. What materials are used? MACI uses your own chondrocytes grown on a porcine collagen membrane (Vericel MACI). Osteochondral allografts use cadaver donor bone-and-cartilage matched to your defect size. OATS uses your own osteochondral plugs from a less weight-bearing area of the same knee. Microfracture / subchondral drilling uses no implant — only your bone marrow elements. How much does cartilage repair cost, and does insurance cover it? Cost varies based on technique, anesthesia, operating-room time, implant cost, and your insurance. Established techniques such as MACI, osteochondral allograft, OATS, and microfracture are generally covered when medically necessary; some advanced techniques may require an appeal, and the investigational umbilical-cord stem-cell technique is handled through the clinical trial. Insurance pre-authorization is managed by Dr. Gomoll's administrative staff before surgery — schedule a consultation for a personalized plan and a benefits check. Is cartilage repair outpatient or inpatient? Most cartilage-repair procedures are performed as outpatient surgery or with a single overnight stay at the Hospital for Special Surgery in New York. The exact plan depends on the technique, your anesthesia, and your medical history, and is confirmed before your surgery date. When can I return to work and sport after cartilage repair? Recovery depends on the technique and your job. Many patients with desk-based work return within 1–2 weeks while still on crutches; physically demanding jobs take longer. Return to recreational activity is typically around 6–9 months and full sport around 9–12 months for graft procedures such as MACI and osteochondral allograft. These are general ranges — your timeline depends on your defect, the procedure, and your rehabilitation. When can I drive after cartilage repair? Driving generally resumes once you are off crutches and narcotic pain medication and can safely control the pedals — often a few weeks for the operative leg, sooner if it is the non-driving leg. Confirm timing with Dr. Gomoll, and see our after-surgery instructions for the recovery milestones. Dr. Gomoll evaluates and treats cartilage defects of the knee at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients from across New York City, the tri-state area, and beyond who want to preserve their own joint rather than move straight to replacement. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Ready to discuss cartilage repair? Schedule a consultation with Dr. Gomoll to determine which technique fits your defect, alignment, and activity goals. Schedule a Consultation Call 646-917-7441 --- ## Day of Surgery: What to Expect | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/day-of-surgery/ Summary: What happens on the day of orthopedic surgery with Dr. Gomoll at NYU Langone — check-in, pre-op holding, anesthesia options (spinal, general, regional), and the operating room process. On the day of surgery you arrive at NYU Langone at the time given the day before, change into a hospital gown, and meet your nurse, anesthesia team, and surgeon in the pre-operative holding area. Spinal anesthesia is the most common at NYU Langone, with general or regional as alternatives. After consent and a final time-out in the OR, anesthesia begins. Your surgical day ## What happens, step by step From check-in to the operating room — here's exactly what to expect at NYU Langone Orthopedic Center. 1 Arrival & check-in The day before surgery the surgical facility will call to give you your arrival time and location. If you haven't heard by late afternoon, call Dr. Gomoll's office at 646-917-7441. Out-of-town patients should confirm the hospital has their cell phone number and hotel address — see the before-surgery checklist for the full pre-op list. 2 Pre-operative holding area After check-in you'll be brought to the pre-op holding area, change into a hospital gown, and your belongings will be secured. A nurse will record your medications, allergies, and pain level. The anesthesia team will introduce themselves and confirm your anesthesia plan. An IV is placed and pain-control medication is given. Your surgeon or PA will obtain your surgical consent and answer any last-minute questions. Why we ask the same question multiple times: multiple staff members including Dr. Gomoll will ask what procedure is being performed and which side. This verbal confirmation at every step is a critical safety protocol — not a sign that anyone is confused about your case. 3 In the operating room Once marked and consented, OR staff bring you to the room. Most ORs are cold — warm blankets are provided. A formal time-out confirms the correct procedure, correct side, and your allergies before anesthesia is administered. For what happens afterward, see post-op instructions and rehab protocols. Step 4 ## Anesthesia options Your anesthesiologist will speak with you directly in pre-op to confirm your choice. Three options are available at NYU Langone. Most common at NYU Langone ### Spinal anesthesia Similar to an epidural, medication is injected into the spine to numb from the waist down. A "twilight sleep" keeps you unaware but breathing on your own. You wake up faster and more easily than with general anesthesia. Full sedation ### General anesthesia The entire body including the brain is anesthetized via IV injection or inhaled gas. No awareness or memory of surgery. A mild sore throat afterward is normal if a breathing tube was used. Nerve block ### Regional anesthesia An injection in the neck (shoulder surgery) or thigh (knee surgery) blocks pain signals from reaching the brain. Given alongside general anesthesia for comfort throughout the procedure. Regional block timing: the nerve block may last 6–8 hours, sometimes longer. Begin taking your post-op pain medication as soon as you feel the numbness starting to wear off — don't wait until pain is severe. ## Questions about the day of surgery? Dr. Gomoll's team can walk you through what to expect at your specific surgical facility. Contact the Office Call 646-917-7441 --- ## Knee Instability (Giving Way) NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/knee-instability/ Summary: Knee instability — a knee that buckles or gives way — evaluated and treated by Dr. Andreas Gomoll at HSS. Causes include ACL and ligament tears, meniscus injury, and patellar instability, with reconstruction and repair options. Reviewed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → Knee instability — the feeling that the knee buckles, shifts, or gives way — usually points to a problem with the structures that stabilize the joint. The most common cause is an ACL tear, but meniscus injury and kneecap instability can also be responsible. Treatment ranges from physical therapy to ligament reconstruction, matched to your injury and goals. Overview ## What is knee instability? Knee instability is the sensation that the knee buckles, shifts, or gives way — most noticeably when pivoting, cutting, or changing direction. It reflects a loss of the normal restraints that keep the knee stable, and it can range from occasional, subtle shifting to repeated episodes that limit activity and risk further damage to the cartilage and meniscus. Causes ## Common causes - ACL tear: the most common cause — the ACL is a key restraint against the knee shifting during pivoting. See ligament surgery - Other ligament injuries: MCL, PCL, or combined ligament injuries can contribute to instability - Meniscus tears: certain tears cause catching and a feeling of buckling. See meniscal procedures - Patellar instability: a kneecap that slips out of place. See patellofemoral pain & instability Symptoms ## Common symptoms - The knee buckling or "giving way," especially on uneven ground or when pivoting - A feeling that the knee will not hold your weight - Swelling or catching after episodes of instability - Avoiding cutting, pivoting, or sports because the knee feels unreliable Treatment ## Treatment options - Non-surgical care: physical therapy and bracing can stabilize the knee for some patients, particularly with partial injuries or lower activity demands - Ligament reconstruction or repair: ACL reconstruction (or the BEAR repair for select tears) restores the primary restraint against giving way - MPFL (medial patellofemoral ligament) reconstruction: similar to ACL reconstruction, MPFL reconstruction utilizes a graft to restore stability, in this case to address patellar instability and dislocation. - Meniscal repair: when a meniscus tear is contributing to mechanical instability - Combined procedures: instability with malalignment or cartilage damage may be addressed alongside osteotomy or cartilage repair Common questions ## Frequently asked questions What does knee instability mean? Knee instability is the sensation that the knee buckles, shifts, or "gives way," especially when pivoting, cutting, or changing direction. It usually reflects a problem with the structures that stabilize the knee — most often the ligaments (such as the ACL), but also the meniscus or the kneecap. What causes a knee to give way? The most common cause is an ACL tear, which removes a key restraint to the knee shifting during pivoting. Other causes include other ligament injuries, meniscus tears that cause catching and buckling, and patellar (kneecap) instability. Identifying the specific cause is the first step in treatment. Does knee instability always need surgery? Not always. Some patients — particularly lower-demand individuals or those with partial injuries — are managed with physical therapy and bracing. Active patients who want to return to cutting and pivoting sports, or who have recurrent giving-way episodes, often benefit from reconstruction or repair. Dr. Gomoll tailors the recommendation to your injury and goals. How is the cause of instability diagnosed? Diagnosis combines your history (how and when the knee gives way), a physical examination testing the ligaments and meniscus, and imaging — typically MRI — to identify which structures are injured. The findings guide whether reconstruction, repair, or non-surgical care is best. Who treats knee instability in New York? Dr. Andreas Gomoll evaluates and treats knee instability at the Hospital for Special Surgery in New York, with a focus on restoring stability while preserving the natural joint. Dr. Gomoll evaluates knee instability at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary. ## Knee giving way? Schedule a consultation with Dr. Gomoll to find the cause and restore stability. Schedule a Consultation Call 646-917-7441 --- ## ACL Reconstruction & BEAR Implant NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/ligament-surgery/ Summary: Ligament surgery with Dr. Andreas Gomoll at HSS — ACL reconstruction with hamstring, quadriceps, patellar tendon, or donor graft, and the FDA-approved BEAR implant for select ACL repairs. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → Ligament tears are among the most common knee injuries, especially in athletes and active individuals. Some ligament injuries, such as many MCL tears, can heal without surgery. Others, particularly ACL tears, often require surgical treatment to restore knee stability and allow a safe return to sports and activity. Dr. Gomoll offers both ACL reconstruction and ACL repair, including several graft options for reconstruction. For select patients with recent ACL tears, he also offers the FDA-approved BEAR® implant, an innovative technique that repairs the torn ACL without the need to harvest a tendon or use donor tissue. Overview ## What is ligament surgery? Ligament tears are among the most common sports injuries. Some ligaments — like the MCL in the knee — can heal by themselves with bracing and rehabilitation. Others, most famously the ACL (anterior cruciate ligament), frequently require reconstruction or repair, especially in active patients who want to return to cutting and pivoting sports. Dr. Gomoll explains ACL reconstruction graft choices in this video. Dr. Gomoll on ACL reconstruction graft choices. Transcriptpatients are oftentimes asked once we get past the yes you have an ACL tear and in your situation I would have that fixed so how do we fix it ACL reconstruction is the most common procedure there are options of taking a donor graft or taking what's called an autograph so from you and donor grafts mainly for patients who are a little bit older a little bit more sedentary but Studies have shown that if you are in your teens 20s your risk of re-rupture so failure of the Reconstruction is much higher with the donor graph so that's why for for that patient population at least in my hands it's always an autograph coming from you then there's also the question what is one graft better than the other there is no one is the best solution the nuances in terms of maybe for this patient that's the better one well for another patient something else works better so in my hands I used to do patella tendon a lot NF gravitated more and more towards hamstrings and quite a substantine and the reason for that is really don't recite Mobility I noticed that my patients that have patellar tendons and they have trouble kneeling kneeling on something hard for years with hamstrings that incision is much smaller it's on the side the front of the name so kneeling is not an issue and there are new techniques where it's done what we call all inside so you can get much thicker grafts and the re-rupture risk is not very different I don't like better so sometimes I use quadriceps tendon and that's a solution for example if you were wrestling or you love Jiu Jitsu or your Runner that does hurdles where you really have high flexion hamstring active patient all the time yeah then hamstring might not be the thing for you and we use quadriceps tendon but the many professional soccer players and NFL players that have hamstring tenons and do just fine [Music] Graft choices ## ACL reconstruction graft choices Several graft options are available for ACL reconstruction, including your own hamstring, quadriceps, or patellar tendon, as well as donor (allograft) tissue. The best choice depends on a number of factors, including your age, activity level, and goals, which Dr. Gomoll will discuss with you during your consultation. Current research does not support a single "gold standard" graft for every patient. Studies have shown similar outcomes and failure rates between commonly used graft options. Some research has found a higher rate of donor-site problems — such as pain, weakness, or kneeling discomfort — with patellar tendon grafts compared to hamstring or quadriceps tendon grafts. For this reason, graft selection is individualized based on each patient's needs and circumstances. Read the studies: - Study 1 - Study 2 - Study 3 ACL repair ## The BEAR implant The FDA-approved BEAR implant allows repair, rather than reconstruction, of select ACL tears. During the procedure, a collagen implant is placed next to the injured ACL to support the knee's natural healing response. No tendon harvest or donor graft is required. The best candidates are patients with a recent ACL tear near the top of the ligament and enough remaining tissue to support healing. Dr. Gomoll has been performing this procedure since early 2022 and serves on the board of the nationwide BEAR registry, which tracks outcomes and helps advance ACL repair research. Read more about the BEAR implant. Candidacy ## Who is a candidate? - ACL Reconstruction: Patients with a torn ACL, particularly active individuals returning to cutting, pivoting, or contact sports, as well as those with knee instability or associated meniscus injuries. - BEAR Implant Repair: Patients with a recent ACL tear and sufficient remaining ligament tissue to support healing and repair. - Non-Surgical Care: Some isolated MCL and PCL injuries, as well as selected lower-demand ACL patients, may be successfully managed with bracing and rehabilitation rather than surgery. When ligament injuries occur alongside malalignment or cartilage damage, Dr. Gomoll may combine ACL reconstruction with an osteotomy or cartilage repair procedure to address all contributing problems at the same time. Informed decision ## Risks to understand ACL surgery has a strong track record, but like any operation it carries risks. These may include infection, blood clots, knee stiffness, graft failure or re-tear, and discomfort related to graft harvest with certain reconstruction techniques. Because each graft option has a different risk profile, graft selection is individualized for each patient. Recovery ## Recovery & return to sport Recovery takes place over several months and progresses through multiple phases, beginning with restoring motion and quadriceps function, followed by strengthening and sport-specific training. Return to cutting and pivoting sports is typically a milestone-based process that takes approximately 9–12 months. Progress is guided by strength, function, and recovery milestones rather than time alone. See our rehabilitation protocols and after-surgery instructions for more detailed recovery information, and share the appropriate protocol with your physical therapist. Common questions ## Frequently asked questions Which ACL graft is best — hamstring, quadriceps, or patellar tendon? There is no single "gold standard." A pooled analysis of multiple ACL trials found no significant difference in outcomes between hamstring and patellar tendon grafts, but a higher complication rate with patellar tendon. A separate review of roughly 47,000 patients found similar failure rates between patellar tendon (2.80%) and hamstring (2.84%) reconstruction. The right graft depends on your age, activity, anatomy, and goals — which Dr. Gomoll discusses with you at your office visit. What is the BEAR implant? The BEAR (Bridge-Enhanced ACL Restoration) implant is an FDA-approved option that enables repair — rather than reconstruction — of select ACL tears. A collagen sponge is placed between the torn ends of the ACL to support the knee's own healing, with no tendon harvest and no donor graft. Best candidates are patients with a recent proximal ACL tear and good residual tissue. Dr. Gomoll has been performing this procedure since early 2022. Do all ligament tears need surgery? No. Some ligaments — such as the MCL of the knee — frequently heal on their own with bracing and rehabilitation. The ACL is the ligament that most often requires reconstruction or repair, particularly in active patients who want to return to cutting and pivoting sports. Dr. Gomoll will discuss whether surgery or a non-surgical course is appropriate for your injury. Is ACL surgery outpatient? ACL reconstruction and BEAR repair are typically performed as outpatient arthroscopic surgery at the Hospital for Special Surgery — most patients go home the same day. The exact plan depends on the procedure, your anesthesia, and your medical history, and is confirmed before your surgery date. When can I return to sport after ACL reconstruction? Return to cutting and pivoting sport after ACL reconstruction is generally a 9–12 month process guided by rehabilitation milestones and strength testing rather than the calendar alone. Your individual timeline depends on the graft, any associated meniscus or cartilage work, and your progress in physical therapy. Dr. Gomoll and his team interact closely with your rehab provider to monitor your progress. Rather than relying on time from surgery alone to determine return to sports, Dr. Gomoll frequently requests a formal Return to Sports assessment, which objectively evaluates your strength and agility to determine readiness to return. When can I drive after ACL surgery? Many patients resume driving once they are off narcotic pain medication and can control the pedals safely — often a few weeks, and longer for surgery on the right leg or when a brace and protected weight-bearing are required. Confirm timing with Dr. Gomoll, and see our after-surgery instructions for recovery milestones. Dr. Gomoll evaluates and treats ACL and other ligament injuries at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients across New York City, the tri-state area, and beyond. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Torn ACL or unstable knee? Schedule a consultation with Dr. Gomoll to discuss whether reconstruction, the BEAR repair, or non-surgical care is right for you. Schedule a Consultation Call 646-917-7441 --- ## Meniscal Surgery NYC: Repair, Meniscectomy & Transplant | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/meniscal-procedures/ Summary: Meniscal surgery with Dr. Andreas Gomoll at HSS — arthroscopic meniscectomy, meniscal repair, and meniscal allograft transplantation for tears, deficiency, and chronic knee pain. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery; recognized as one of the leading joint-preservation surgeons on the East Coast. View full credentials & CV → The meniscus is a C-shaped piece of cartilage that acts as a shock absorber between the femur and tibia in the knee. When the meniscus tears, treatment may include removing the damaged portion (partial meniscectomy), repairing the tear with sutures, or, in select patients who have previously lost significant meniscal tissue, meniscal transplantation. Whenever possible, Dr. Gomoll focuses on preserving and repairing the meniscus to help protect the knee cartilage and support long-term joint health. Overview ## What are meniscal procedures? The meniscus is a horseshoe-shaped piece of fibrocartilage between the articular surfaces of the femur and tibia. There are two menisci in each knee — a medial and a lateral — and each acts as a shock absorber, distributes load, and stabilizes the joint. The meniscus is frequently damaged through acute injury (cutting, pivoting, deep flexion under load) or chronic degeneration. Dr. Gomoll discusses meniscus preservation in this video. Meniscal tears are treated with one of three approaches: partial meniscectomy (removing the torn portion), meniscal repair (suturing the tear so it heals), or — for patients with prior near-total meniscectomy and persistent symptoms — meniscal allograft transplantation (replacing the missing meniscus with donor tissue). Candidacy ## Who is a candidate for meniscal surgery? Indications depend on the procedure: - Meniscectomy: patients with mechanical symptoms (catching, locking, sharp pain with pivoting) from a torn meniscus that cannot be repaired (e.g., complex degenerative tears, tears in the avascular inner zone) - Meniscal repair: patients with tears in the vascular outer zone of the meniscus, particularly bucket-handle, vertical, or peripheral tears with healthy surrounding tissue. Younger, more active patients are best candidates - Meniscal transplantation: patients with prior near-total meniscectomy who develop activity-related pain and swelling, before bone-on-bone arthritis sets in. Concurrent ligament reconstruction or osteotomy may be needed if alignment or ACL function is compromised For patients with combined meniscal and cartilage damage, Dr. Gomoll often performs meniscal repair or transplantation alongside cartilage repair in a single procedure. When meniscus surgery may not be the answer: not every meniscus tear needs an operation. Many degenerative tears in older patients with early arthritis improve with physical therapy, activity modification, and time — and surgery on a degenerative tear in an arthritic knee may not relieve pain. Meniscal transplantation is not appropriate once bone-on-bone arthritis has already developed, and outcomes are poorer in patients with significant cartilage loss, uncorrected malalignment, or untreated ligament instability. Dr. Gomoll will discuss whether a non-surgical course or a staged plan is the better starting point for your knee. Techniques ## How meniscal surgery is performed Three approaches, selected to preserve as much healthy meniscus as possible. Expand each for a demonstration video and intra-operative images. 1 Meniscectomy (partial removal) By far the most common meniscal procedure (>90% of meniscal surgery), meniscectomy refers to removal of unstable torn meniscus tissue causing symptoms. During this arthroscopic procedure, a fiber-optic camera is inserted through small portal incisions and the torn portion is removed with a motorized shaver, leaving as much healthy tissue behind as possible. 2 Meniscal repair For repairable tears (most often bucket-handle or peripheral vertical tears in the vascular outer zone), the torn meniscus is arthroscopically reduced and stabilized with all-inside suture anchors or inside-out / outside-in suture techniques. Without repair, an unstable bucket-handle tear can lock the knee and cause further tearing. After repair with several suture devices, the meniscus is stable to probing. The need for crutches depends on the tear type, ranging from 2–6 weeks. 3 Meniscal allograft transplantation When a meniscus has been previously removed and the patient develops symptoms of meniscal deficiency, transplantation can be considered. Donor meniscal tissue is size-matched, cleaned, and frozen by a transplant organization, then shipped to the hospital before the procedure. During surgery, Dr. Gomoll arthroscopically removes any non-functional remnants of the prior meniscus, prepares the joint, and introduces the new meniscus through a small front incision. The graft is repaired to the tibia (often with bone fixation at the anterior and posterior horns) and sutured to the joint capsule through a second small incision on the side of the knee. Rehab after meniscal transplantation: crutches and a brace for 6 weeks. PT advances through phased protocols over 6–9 months before return to impact activity. Choosing a procedure ## Repair vs. removal vs. transplant The right meniscus operation depends on the tear pattern, its location relative to the blood supply, and how much healthy tissue remains. Dr. Gomoll matches the technique to the tear, preserving as much native meniscus as possible. This table summarizes how the three approaches differ. Approach Best suited for What happens to the meniscus Weight-bearing after surgery Return to sport Partial meniscectomy Complex or degenerative tears, and tears in the avascular inner "white zone" that cannot heal The unstable torn portion is trimmed away; healthy tissue is preserved Full weight-bearing immediately ~4–6 weeks Meniscal repair Bucket-handle, vertical, or peripheral tears in the vascular outer "red zone," especially in younger, active patients The tear is sutured so the meniscus heals and is retained Protected weight-bearing with crutches and brace for 4–6 weeks ~4–6 months Meniscal allograft transplantation Prior near-total meniscectomy with symptoms of meniscal deficiency, before bone-on-bone arthritis develops The missing meniscus is replaced with size-matched donor tissue Protected weight-bearing with crutches and brace for 4–6 weeks ~6–9 months Why preserving the meniscus matters: the meniscus distributes load and protects the articular cartilage. Removing more tissue than necessary increases contact stress on the cartilage and can accelerate arthritis over time — which is why repair is favored whenever the tear pattern and tissue quality allow it, and why transplantation is offered to selected patients before arthritis sets in. Approach ## Dr. Gomoll's approach to meniscal surgery Dr. Gomoll selects the treatment based on the type of tear and the condition of the meniscal tissue rather than automatically removing the damaged portion. Because the meniscus plays an important role in absorbing shock and protecting the knee cartilage, every effort is made to repair a tear whenever possible — especially in younger, active patients and in tears located in the outer portion of the meniscus where healing potential is greater. When a tear cannot be repaired, only the damaged and unstable portion is removed while preserving as much healthy meniscal tissue as possible. Dr. Gomoll also evaluates the entire knee, not just the meniscus tear. When meniscal deficiency occurs alongside malalignment, ligament instability, or cartilage damage, those issues may need to be addressed as part of the treatment plan. Depending on the findings from the examination and imaging studies, a meniscal transplant may be performed alone or combined with an osteotomy, ligament reconstruction, or cartilage repair procedure to create the best environment for long-term success. Before surgery ## Preparing for meniscal surgery Pre-operative preparation includes MRI to confirm tear location and configuration, a focused clinical exam, and review of medical history. Patients stop narcotics 14 days before, blood thinners and supplements that increase bleeding risk 7–10 days before, and nothing by mouth after midnight on the surgical date. See our before-surgery checklist for the full timeline. Imaging quality matters — review our imaging page for guidance. Comfort ## Anesthesia & staying comfortable Meniscal surgery is performed under general or spinal anesthesia, paired with long-lasting local anesthesia or occasionally a regional nerve block that helps the pain for 24–36 hours. You will meet Dr. Gomoll and your anesthesiologist before surgery to choose the approach that fits you. Arthroscopic meniscus procedures, including transplantation, are outpatient procedures. Many meniscectomy patients only require anti-inflammatories, Tylenol and ice; meniscus repair and transplant patients may use narcotic pain medication for the first 2–3 days in addition. Worried about pain medication? The goal is to control pain with the lowest effective amount of medication for the shortest time, supported by ice, elevation, and the long-lasting local pain-medication injection — not to leave you dependent on opioids. The full pain-control timeline is in our after-surgery instructions, and bracing and cold-therapy options are covered on our bracing & ice machine page. Honest answers ## Common concerns about meniscus surgery #### "Will my insurance cover it?" Meniscectomy and standard meniscal repair are typically covered when medically necessary. Meniscal transplantation may require a more detailed authorization, sometimes including an appeal — Dr. Gomoll's administrative team manages pre-authorization before surgery. #### "How long will recovery take?" A meniscectomy is among the faster knee recoveries — many patients return to desk work within a few days and everyday activities within 1–2 weeks. Repair and transplant trade a longer recovery for the long-term benefit of keeping a working meniscus. #### "I'm nervous about the surgery itself." Most meniscal surgery is arthroscopic — performed through small portal incisions with a camera — and done as a same-day outpatient procedure. Dr. Gomoll will walk you through exactly what to expect at your consultation. Informed decision ## Risks to understand Meniscal surgery is common and generally well tolerated, but like any operation it carries risks you should weigh with Dr. Gomoll before deciding. Depending on the procedure, these can include infection, blood clots (DVT/PE), knee stiffness, a repaired or transplanted meniscus that does not fully heal and may re-tear, and progression of arthritis over time — particularly when meniscal tissue has been removed. Because meniscal repair and transplantation rely on biological healing, a second procedure is sometimes needed if the tissue fails to heal. No meniscus procedure is a guaranteed permanent fix. These operations are designed to relieve mechanical symptoms, protect the cartilage, and restore function — but results depend on the tear pattern, tissue quality, alignment, body weight, activity level, and how closely you follow the rehabilitation protocol. Dr. Gomoll will review the specific risks and realistic expectations for your knee at your consultation. Technology ## Materials & technologies we use - All-inside meniscal repair devices — rapid, low-profile suture anchors that minimize neurovascular risk - Inside-out / outside-in suturing for tears in zones not accessible with all-inside devices - Suture passing devices such as Knee Scorpion, Novostitch, FirstPass - ActivBraid Collagen co-braid suture to improve biologic healing rates - Fresh-frozen meniscal allografts from FDA-regulated tissue banks — size-matched to within ±5% of native dimensions - Arthroscopic instrumentation — high-definition fiber-optic camera, motorized shavers, biters, dedicated meniscal-repair instruments - HSS imaging — high-resolution 3T MRI for tear identification and surgical planning Recovery ## Follow-up & long-term outcomes #### Meniscectomy Full weight-bearing immediately, PT focused on swelling control and quad activation in week 1, return to running at 4 weeks and sport at 4–6 weeks. #### Meniscal repair Protected weight-bearing in a brace for 4–6 weeks with controlled ROM, progressive loading 6–12 weeks, return to sport at 4–6 months. #### Meniscal transplantation Protected weight-bearing in a brace for 4–6 weeks, generally followed by an additional 6 weeks in a compartment-unloading brace to protect the transplant while allowing weight-bearing as tolerated, phased PT over 6–9 months, return to impact activity at 6–9 months. Phase-by-phase PT plans are downloadable on our knee rehab protocols page. General recovery FAQs are on our after-surgery page. Real outcomes ## Patient outcomes Real outcomes from Dr. Gomoll's meniscal practice: - KN — meniscus transplantation + distal femoral osteotomy — high-school athlete back to competitive cross-country and indoor track - AD — distal femoral osteotomy + lateral meniscal allograft transplantation — meniscal-deficient knee treated with a combined transplant and realignment - Jennifer — HTO + ACL reconstruction — a combined realignment-and-ligament case in a volleyball player, the kind of multi-structure plan that protects a meniscus transplant or repair - Documented intra-operative cases — arthroscopic photographs from related meniscal and cartilage cases - Research: Anatomic risk factors for cartilage lesions — American Journal of Sports Medicine, 2019 More written outcomes are on our patient testimonials page. Common questions ## Frequently asked questions How long does meniscus surgery take? Arthroscopic meniscectomy typically takes 30–45 minutes; meniscal repair adds 30–60 minutes depending on tear configuration; meniscal transplantation takes approximately 2 hours due to graft preparation and fixation. Is meniscus surgery painful? Procedures are performed under general or spinal anesthesia, frequently with additional local anesthetic lasting 6–8 hours after surgery. Patients are discharged the same day. Meniscectomy patients typically use only anti-inflammatories, ice and Tylenol after the first 2–3 days; repair and transplant patients may need narcotic pain medication for 2–3 days in addition. Can my meniscus tear be repaired or does it need to be removed? It depends on tear location, configuration, and tissue quality. Tears in the vascular outer "red zone" of the meniscus can heal and are repaired. Tears in the avascular inner "white zone," complex degenerative tears, and chronic tears with frayed tissue typically require partial removal (meniscectomy). Dr. Gomoll preserves as much healthy meniscus as possible — every effort is made to repair before resorting to meniscectomy. What is meniscus transplantation and who needs it? Meniscal transplantation replaces a missing or non-functional meniscus with size-matched donor tissue. It is considered for patients with prior near-total meniscectomy who develop activity-related pain and swelling from meniscal deficiency, before bone-on-bone arthritis develops. Outcomes are best in younger, active patients with intact ligaments and minimal cartilage damage. How much does meniscus surgery cost? Cost varies by procedure, anesthesia, and your insurance. Meniscectomy and standard meniscal repair are typically covered without difficulty when medically necessary; meniscal transplantation may require a more detailed insurance authorization, sometimes including an appeal. Dr. Gomoll's administrative team handles approval — see our before-surgery insurance page, or schedule a consultation for a personalized plan and a benefits check. Is meniscus surgery outpatient or inpatient? Meniscectomy, meniscal repair, and meniscal allograft transplantation are typically performed as outpatient surgery at the Hospital for Special Surgery in New York — most patients go home the same day. The exact plan depends on the procedure, your anesthesia, and your medical history, and is confirmed before your surgery date. When can I return to work and sport after meniscus surgery? Recovery depends on the procedure. Meniscectomy patients often return to desk work within a few days, to most everyday activities within 1–2 weeks, and recreational sport at 4–6 weeks. Meniscal repair requires a brace and protected weight-bearing for 4–6 weeks, with return to sport around 4–6 months while the tear heals. Meniscal transplantation is the longest, with phased rehabilitation over 6–9 months before impact activity. These are general ranges — your timeline depends on the tear, the procedure, and your rehabilitation. When can I drive after meniscus surgery? Many meniscectomy patients drive within a few days to a week once able to walk comfortably and control the pedals safely. Repair and transplant patients in a brace with protected weight-bearing wait longer — often several weeks for the operative leg. Confirm timing with Dr. Gomoll, and see our after-surgery instructions for the recovery milestones. Dr. Gomoll evaluates and treats meniscus tears and meniscal deficiency at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients from across New York City, the tri-state area, and beyond who want to preserve their own meniscus and cartilage rather than move straight to replacement. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Concerned about a meniscus tear? Schedule a consultation with Dr. Gomoll to find out whether your tear can be repaired or whether transplantation is appropriate. Schedule a Consultation Call 646-917-7441 --- ## Imaging: X-rays and MRIs Before Your Visit | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/new-page-1/ Summary: Why high-quality imaging matters for an accurate orthopedic diagnosis — what to bring to your visit, the difference between community MRIs and HSS MRIs, and image-quality examples. Bring all outside imaging on a disk to upload before your visit or to bring with you. Dr. Gomoll needs to look at the images directly — not just the radiologist's report — to make a diagnosis. HSS provides excellent MRI quality and is generally the preferred imaging location, but adequate-quality outside images are also acceptable. ## Why imaging matters Good-quality imaging is critical to an accurate diagnosis. X-rays and MRI scans are the most common modalities used in orthopaedics — X-rays show bones, while MRIs focus on soft tissues. Both are typically required for a complete picture before Dr. Gomoll can recommend treatment. ## What to bring to your visit If you have outside imaging, please make sure you have the actual images on a disk — either to upload before your visit or bring with you. If you request the results to be sent directly from the imaging facility, 90% of the time only the report gets faxed. Dr. Gomoll needs to look at the images directly, rather than relying on the radiologist's impression. If imaging is not available at the time of your appointment, no final diagnosis or treatment plan can be provided. Please contact our office well in advance to coordinate image transfer. ## Outside MRI vs. HSS MRI quality Outside imaging varies in quality. HSS provides excellent MRI resolution and is generally the preferred location. However, as long as outside images are adequate quality, Dr. Gomoll is happy to review them or send you for additional imaging closer to home. Sometimes it is preferable to drive to an HSS facility rather than risk an inadequate scan that does not help with diagnosis. Coronal view: outside MRI (left) versus HSS MRI (right) — notice the much higher resolution for fine detail. Axial view: outside MRI (left) versus HSS MRI (right) — notice the much higher resolution for fine detail. Sagittal view: outside MRI (left) versus HSS MRI (right) — notice the much higher resolution for fine detail. ## Next steps - Already have imaging? Contact our office to upload it before your visit. - Need imaging? Ask about HSS imaging facilities convenient to you. - Preparing for surgery? See our pre-op checklist and day-of-surgery guide. Patient Information ## Related patient information - Before surgery — insurance approval, what to bring, and medications to stop - Day of surgery — check-in, pre-op holding, and anesthesia at HSS - After surgery — recovery timelines, pain control, and return-to-activity - Rehab (PT) protocols — phase-by-phase physical therapy plans by procedure ## Questions about imaging for your appointment? Call our office and we'll help you coordinate the right imaging in advance. Contact the Office Call 646-917-7441 --- ## Knee Osteotomy (Realignment Surgery) NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/osteotomy/ Summary: Knee osteotomy with Dr. Andreas Gomoll at HSS — high tibial and distal femoral realignment surgery that corrects malalignment, offloads damaged cartilage, and preserves the natural knee joint. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → When the knee is properly aligned, weight is distributed evenly across the joint. When alignment shifts — whether from genetics, injury, or arthritis — excess stress is placed on one side of the knee, which can accelerate cartilage wear and joint damage. An osteotomy corrects this problem by carefully realigning the bone to redistribute weight away from the damaged area of the knee. The bone is then secured with a plate and/or screws while it heals. By reducing pressure on the affected portion of the joint, osteotomy can help relieve symptoms and preserve the natural knee. Overview ## What is osteotomy? When the knee is properly aligned, weight is distributed evenly across the joint. In some patients, however, the alignment is off due to genetics, injury, or degeneration over time. This malalignment can place excessive stress on one side of the knee, increasing wear and accelerating joint damage. An osteotomy corrects the alignment by cutting and repositioning the bone to redistribute weight across the knee. The bone is then secured with a plate while it heals. In many cases, the plate can be removed later in a simple outpatient procedure. Technique ## How osteotomy is performed The location of the correction depends on where the alignment problem originates. The procedure may be performed in the upper tibia (high tibial osteotomy, HTO), the lower femur (distal femoral osteotomy, DFO), or at the tibial tubercle (tibial tubercle osteotomy, TTO), which is commonly used for kneecap maltracking and instability. During the procedure, the bone is carefully cut and realigned to redistribute weight across the knee. The correction is then stabilized with a plate and screws while the bone heals. Osteotomy is often combined with cartilage repair, meniscal transplantation, or ligament reconstruction to help protect those procedures and improve their long-term success. David Goggins discusses his high tibial osteotomy, performed by Dr. Gomoll, with Joe Rogan. Candidacy ## Who is a candidate? - Patients with malalignment (bow-legged or knock-kneed) that is overloading one compartment of the knee - Younger, active patients with damage isolated to one compartment, where realignment can delay or avoid knee replacement - Patients undergoing cartilage repair, meniscal transplantation, or ligament reconstruction whose alignment must be corrected to protect that procedure Informed decision ## Risks to understand Osteotomy is a well-established joint-preservation procedure, but like any surgery it carries risks you should weigh with Dr. Gomoll — including infection, blood clots, delayed healing of the bone cut, hardware irritation that may warrant later plate removal, and the possibility that arthritis progresses over time despite realignment. Recovery ## Recovery Because the procedure involves a healing bone cut, recovery includes a period of protected weight-bearing, followed by progressive strengthening and return to activity over several months. The exact plan depends on the type of osteotomy and any procedures performed at the same time. See our rehab protocols and after-surgery instructions, and confirm your timeline with Dr. Gomoll. Outcomes ## Patient outcomes - Jennifer — HTO + ACL reconstruction — a combined realignment-and-ligament case in a volleyball player - More patient outcomes — written stories from realignment and combined joint-preservation cases Common questions ## Frequently asked questions What is a knee osteotomy? A knee osteotomy is a realignment procedure. When the leg's alignment is off — from congenital shape, prior trauma, or degeneration — load is concentrated on one part of the knee and can accelerate wear. In an osteotomy the malaligned bone is cut and realigned, then held with a plate until it heals, shifting weight away from the damaged compartment. Why correct alignment instead of replacing the knee? When legs are straight, force across the knee is distributed evenly. Realignment can offload a damaged or repaired compartment and protect the joint, which is why osteotomy is often used in younger, active patients — frequently alongside cartilage repair, meniscus transplantation, or ligament reconstruction — to preserve the natural knee rather than move straight to replacement. Does the plate stay in permanently? The plate holds the realigned bone while it heals. It can later be removed in a simple outpatient procedure if it becomes bothersome, though many patients leave it in place. Dr. Gomoll will discuss what makes sense for you. Is osteotomy often combined with other procedures? Yes. Malalignment frequently accompanies cartilage damage, meniscal deficiency, or ligament injury. Correcting alignment at the same time as cartilage repair, meniscal transplantation, or ACL reconstruction protects that work and improves the durability of the result. What is recovery from osteotomy like? Recovery involves a period of protected weight-bearing while the bone cut heals, followed by progressive strengthening and return to activity over several months. The exact timeline depends on the type of osteotomy, whether other procedures were performed at the same time, and your healing — see our after-surgery and rehab pages, and confirm your plan with Dr. Gomoll. Dr. Gomoll evaluates malalignment and performs knee realignment surgery at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients across New York City and beyond who want to preserve their natural knee. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Knee pain from malalignment? Schedule a consultation with Dr. Gomoll to find out whether realignment surgery can offload the damaged part of your knee. Schedule a Consultation Call 646-917-7441 --- ## Patellofemoral Pain & Patellar Instability NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/patellofemoral-pain/ Summary: Patellofemoral pain and patellar (kneecap) instability evaluated and treated by Dr. Andreas Gomoll at HSS — from physical therapy to MPFL reconstruction, tibial tubercle osteotomy, and cartilage repair. Reviewed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → Patellofemoral problems range from anterior (front-of-knee) pain to a kneecap that slips out of place — patellar instability. Many cases improve with physical therapy and bracing; recurrent instability or cartilage damage may call for procedures such as MPFL reconstruction, tibial tubercle osteotomy, or cartilage repair. Dr. Gomoll focuses on correcting the underlying cause to protect the joint long-term. Overview ## What is patellofemoral pain? The patella (kneecap) glides in a groove at the end of the thigh bone as you bend and straighten the knee. Patellofemoral pain is pain around or behind the kneecap, often aggravated by stairs, squatting, kneeling, or prolonged sitting. It can arise from how the kneecap tracks, from wear of the cartilage behind the kneecap, or from muscle imbalance and alignment. Instability ## Patellar instability Patellar instability is when the kneecap slips partially (subluxation) or fully (dislocation) out of its groove. It may follow a traumatic dislocation or occur in patients whose anatomy predisposes the kneecap to track poorly. Recurrent instability can progressively damage the cartilage on the back of the kneecap. Dr. Gomoll discusses when an unstable kneecap needs surgery in his article "Do I need surgery for my unstable patella?" Symptoms ## Common symptoms - Aching pain at the front of the knee, around or behind the kneecap - Pain with stairs, squatting, kneeling, or sitting with the knee bent - A sensation of the kneecap shifting, catching, or giving way - Episodes of the kneecap partially or fully dislocating Treatment ## Treatment options Treatment is matched to the cause and severity: - Non-surgical care: physical therapy to balance the muscles around the kneecap, bracing, and activity modification — often the first step, especially after a first dislocation - MPFL reconstruction: rebuilding the medial patellofemoral ligament that acts as the checkrein holding the kneecap in place - Tibial tubercle osteotomy: realigning the pull of the kneecap when bony alignment contributes to instability or overload - Cartilage repair: restoring the joint surface behind the kneecap when it has been damaged by instability or wear The right plan depends on your imaging and exam. Dr. Gomoll's goal is to address the underlying cause — alignment, ligament support, and cartilage — rather than only the symptoms. Common questions ## Frequently asked questions What is patellofemoral pain? Patellofemoral pain is pain at the front of the knee, around or behind the kneecap (patella), where it glides in a groove at the end of the thigh bone. It is often aggravated by stairs, squatting, kneeling, or sitting for long periods, and can stem from how the kneecap tracks, cartilage wear behind the kneecap, muscle imbalance, or alignment. What is patellar instability? Patellar instability is when the kneecap slips partially (subluxation) or fully (dislocation) out of its groove. It can follow a traumatic dislocation or occur in patients whose anatomy predisposes the kneecap to track poorly. Recurrent instability can damage the cartilage on the back of the kneecap over time. Do I need surgery for an unstable kneecap? Not always. Many patients are managed without surgery using physical therapy, bracing, and activity modification — especially after a first-time dislocation. Surgery is considered for recurrent instability, or when imaging shows anatomic risk factors or cartilage damage. Dr. Gomoll discusses this decision in detail — see his article, "Do I need surgery for my unstable patella?" What surgical options treat patellar instability? Depending on the cause, options include MPFL (medial patellofemoral ligament) reconstruction to restore the checkrein that holds the kneecap in place, tibial tubercle osteotomy to realign the pull of the kneecap, and cartilage repair if the joint surface is damaged. The right combination depends on your anatomy and imaging. Which doctor treats patellofemoral problems in New York? Dr. Andreas Gomoll evaluates and treats patellofemoral pain and patellar instability at the Hospital for Special Surgery in New York, with a focus on joint preservation — addressing the underlying cause rather than only the symptoms. Dr. Gomoll evaluates patellofemoral pain and patellar instability at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary. ## Front-of-knee pain or an unstable kneecap? Schedule a consultation with Dr. Gomoll to find the cause and the right treatment for your knee. Schedule a Consultation Call 646-917-7441 --- ## After Surgery: Post-Op Instructions & FAQs | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/postop-instructions/ Summary: Recovery guidance after orthopedic surgery with Dr. Gomoll — physical therapy, brace and crutches, pain control, driving, showering, and return-to-work timelines. After surgery with Dr. Gomoll, physical therapy typically starts within 1–2 weeks (or the next day for in-patient stays). Most patients use crutches 4–6 weeks, can shower at 3 days, return to desk work in 2 days to 2 weeks, and finish narcotic pain medication by week 2. Specific timelines depend on your procedure — see rehab protocols for details. 3 days Until you can shower 1–2 wks Until PT starts 4–6 wks Crutches (average) ~2 wks Pain meds duration Recovery guide ## Post-operative frequently asked questions Everything you need to know about the days and weeks after surgery with Dr. Gomoll. When will I start physical therapy? If you have an in-patient procedure and stay overnight, PT begins the next day with a therapist who comes to your home for the first two weeks. For a day-surgery procedure, physical therapy usually starts within 1–2 weeks depending on the procedure. Outpatient PT is generally preferable to in-home therapy because therapists have more equipment at their office. Dr. Gomoll's staff will contact you after surgery with a PT prescription and protocol, and we have suggestions for PT places throughout New York and the surrounding area. What should I do at home in the first days? During the first 2 days, focus on managing pain, elevation, and applying ice. Every day you must bend your knee, perform your home exercises, and apply ice. You will receive more detail from the PA, athletic trainer, and Dr. Gomoll. What will I do during physical therapy? The primary goal is to first restore range of motion (ROM) so you do not get stiff after surgery. You then begin building strength. You will be given a detailed phase-by-phase protocol — share it with your physical therapist, who can also reference our rehab protocols section directly. When do I need to wear my brace? It depends on your specific procedure — you will get instructions after surgery. If you have a brace, wear it any time you are up and moving on your crutches to protect your leg in case you fall. You don't need to wear it while resting, but we encourage using it while sleeping for the first week. How long will I need to use crutches? On average, between 4 and 6 weeks depending on the type of surgery. When can I drive? After right-leg surgery you may not legally drive until you have re-established good control and bear full weight, which typically takes 4 to 6 weeks. After left-knee surgery (and not driving a manual transmission) you may return to driving between 1 and 2 weeks — but only when you are no longer taking pain medication. When can I shower? You may shower 3 days after surgery. You may not submerge your incision in water (pool, hot tub, bathtub, lake, ocean) for 3 weeks. When can I go back to work? It depends on your job. Sedentary or desk work: typically 2 days for small arthroscopic procedures, up to 2 weeks for more involved procedures requiring narcotic pain medication. Labor-intensive jobs: up to 12 weeks — Dr. Gomoll and his team will discuss this with you specifically. How will my pain be controlled after surgery? Immediately after surgery, pain is controlled with IV medication in the recovery room. You will go home with a prescription for oral pain medication (commonly Tramadol; stronger options like Vicodin, Oxycodone, or Dilaudid for more involved procedures). For stronger medications, you'll need regularly scheduled doses every 4–6 hours for the first few days. After that, limit pain medication to before physical therapy and before bedtime. Most patients do not need pain medication after week 2; if you do, we will refer you to a pain management service. Refer to our pain management handout for more detail. Why is the prescription quantity limited? We limit the amount of narcotics prescribed due to concerns over addictive potential. The Massachusetts Stop Addiction resource has additional information on this topic. How do I request medication refills? Set up a Patient Gateway account before surgery to request refills through Epic Patient Gateway. If that's not set up in time, call the office at 646-917-7441. Helpful links ## Recovery resources - Rehab (PT) protocols — phase-by-phase rehab plans for knee and shoulder procedures - Bracing & ice machine — instructions for the Cymedica Evive brace and GameReady cooling device - Before surgery — pre-op checklist and what to bring - Day of surgery — what to expect at HSS - Post-op pain management handout (PDF) For PT or recovery questions between visits, call the office at 646-917-7441 for same-day response. ## Questions about your recovery? Dr. Gomoll's team is here to support you through every phase of healing. Contact the Office Call 646-917-7441 --- ## Rehab (PT) Protocols | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/rehab-pt-protocols/ Summary: Phase-by-phase physical therapy protocols for knee and shoulder procedures performed by Dr. Andreas Gomoll. Share with your physical therapist for post-op rehab. The post-operative rehabilitation contributes as much as the surgical procedure itself to overall success. Below are downloadable rehab protocols organized by joint and procedure. Share the appropriate protocol with your physical therapist before starting PT. ## Why rehab protocols matter Surgery is teamwork between the surgeon, the patient, and the rehabilitation specialist. Dr. Gomoll's protocols are written specifically for the procedures he performs, so your therapist knows exactly which motions, weights, and timelines to follow at each phase. Most outpatient PT begins within 1–2 weeks after surgery — see our after-surgery instructions for the full recovery timeline, and bracing & ice machine for cold-therapy and brace use. ## Knee rehab protocols For knee procedures — including ACL reconstruction, meniscal repair and transplant, cartilage repair (MACI, OATS, osteochondral allograft), high tibial osteotomy (HTO), and partial knee replacement (MAKO, MISHA): Knee rehab protocols → ## Shoulder rehab protocols For shoulder procedures — including rotator cuff repair, labral repair, instability surgery, and shoulder arthroscopy: Shoulder rehab protocols → ## Questions for the athletic trainer If your physical therapist needs to consult with Dr. Gomoll's athletic trainer, they can call the office at 646-917-7441 or refer them directly to this site. ## Questions about your rehab plan? Dr. Gomoll's PT team can help match you to a therapist familiar with our protocols. Contact the Office Call 646-917-7441 --- ## Arthroscopic Rotator Cuff Repair NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/rotator-cuff-repair/ Summary: Arthroscopic rotator cuff repair with Dr. Andreas Gomoll at HSS — minimally invasive repair of torn shoulder tendons through small portal incisions, for acute tears and chronic repetitive-stress injury. Performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → The rotator cuff is a group of muscles and tendons that help lift, rotate, and stabilize the shoulder. Rotator cuff tears can occur suddenly after an injury — such as a fall onto an outstretched arm — or develop gradually over time from repetitive use and age-related wear. Most rotator cuff tears can be repaired arthroscopically through small incisions using a camera and specialized instruments, allowing treatment without the need for a large open incision. Overview ## What is rotator cuff repair? The rotator cuff is the most important system of muscles and tendons for shoulder function — it stabilizes the joint and powers overhead and rotational movement. The cuff can be injured acutely through trauma, for example slipping on black ice and landing hard on the arm, or through years of repetitive stress that gradually wears the tendon. When the cuff tears, repair restores the tendon's attachment to the bone so it can heal. Technique ## How the repair is performed Most rotator cuff tears can be repaired arthroscopically through small incisions rather than the larger incisions used in traditional open surgery. During the procedure, a small camera is inserted into the shoulder, allowing the surgeon to visualize the tear and repair it using specialized instruments. The torn tendon is secured back to the bone using suture anchors, creating the conditions needed for healing. Because the procedure is minimally invasive, it typically results in less disruption to the surrounding soft tissues than traditional open repair. Candidacy ## Who is a candidate? - Patients with an acute traumatic rotator cuff tear causing pain, weakness, or loss of motion - Patients with a chronic, repetitive-stress tear that has not improved with non-surgical care - Active patients who need to restore overhead strength and function Not every tear requires surgery — some are managed with physical therapy and activity modification. Dr. Gomoll will review your imaging and exam to recommend the right course. Informed decision ## Risks to understand Arthroscopic rotator cuff repair is a well-established procedure, but like any surgery it carries risks you should weigh with Dr. Gomoll — including infection, shoulder stiffness, and the possibility that the repair does not fully heal (re-tear), which is more likely with larger or more chronic tears. Adherence to the rehabilitation protocol is important to protect the repair. Recovery ## Recovery & rehabilitation Because the repaired tendon must heal back to bone, recovery is staged: a period in a sling, then gentle range-of-motion, then progressive strengthening over several months. For shoulder rehab protocols after rotator cuff repair, biceps tenodesis or tenotomy, and arthroscopic instability repair, see our shoulder rehab protocols page, and review our after-surgery instructions. Common questions ## Frequently asked questions What is the rotator cuff? The rotator cuff is the most important system of muscles and tendons for shoulder function — it stabilizes the shoulder and powers overhead and rotational movement. When the cuff tears, it can cause pain, weakness, and difficulty lifting or reaching. How does a rotator cuff tear happen? The cuff can be injured acutely through trauma — for example, slipping on black ice and landing hard on the arm — or through years of repetitive stress that gradually wears the tendon. Both patterns are common, and the right treatment depends on the size, location, and chronicity of the tear. How is rotator cuff repair performed? Most tears can be repaired arthroscopically through small portal incisions, avoiding the larger open incisions used in the past. Through these portals the torn tendon is re-attached to the bone with suture anchors, restoring the cuff's attachment so it can heal. Is rotator cuff repair outpatient? Arthroscopic rotator cuff repair is typically performed as outpatient surgery at the Hospital for Special Surgery — most patients go home the same day. The exact plan depends on the tear, your anesthesia, and your medical history, and is confirmed before your surgery date. What is recovery from rotator cuff repair like? The repaired tendon needs time to heal to bone, so recovery is staged: a period in a sling, then gentle range-of-motion, then progressive strengthening over several months. Following the rehabilitation protocol closely is essential to protect the repair — see our shoulder rehab protocols and confirm your plan with Dr. Gomoll. Dr. Gomoll evaluates and repairs rotator cuff and other shoulder injuries at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients across New York City and beyond. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Surgical and non-surgical orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and adherence to rehabilitation. ## Shoulder pain or a suspected cuff tear? Schedule a consultation with Dr. Gomoll to find out whether arthroscopic repair is right for your shoulder. Schedule a Consultation Call 646-917-7441 --- ## Shoulder Instability & Dislocation NYC | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/shoulder-instability/ Summary: Shoulder instability and recurrent dislocation evaluated and treated by Dr. Andreas Gomoll at HSS — from physical therapy to arthroscopic instability (labral/Bankart) repair, with a shoulder rehabilitation protocol. Reviewed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery, Weill Cornell Medical School; Attending Surgeon at the Hospital for Special Surgery. View full credentials & CV → Shoulder instability is when the ball of the shoulder slips partially or fully out of its socket — often after a traumatic dislocation that tears the labrum. It can become recurrent, with the shoulder dislocating more easily over time. Treatment ranges from physical therapy to arthroscopic instability repair, matched to your injury and activity level. Overview ## What is shoulder instability? The shoulder is the most mobile joint in the body, which also makes it prone to instability. Shoulder instability is when the ball at the top of the arm bone slips partially (subluxation) or fully (dislocation) out of the socket. It commonly follows a traumatic dislocation that damages the labrum — the rim of cartilage that deepens and stabilizes the socket. Causes & risk ## Why the shoulder keeps slipping A first traumatic dislocation can tear the labrum and stretch the supporting ligaments, so the shoulder dislocates more easily afterward — sometimes with progressively less force. Younger, active patients are at higher risk of recurrence, and repeated instability can cause additional damage to the labrum, bone, and cartilage over time, which is why timely evaluation matters. Symptoms ## Common symptoms - The shoulder slipping, subluxating, or fully dislocating - A feeling of apprehension that the shoulder will "come out," especially overhead or reaching back - Pain, weakness, or swelling after an episode - Recurrent dislocations with decreasing force over time Treatment ## Treatment options - Non-surgical care: physical therapy to strengthen the rotator cuff and the muscles that stabilize the shoulder, with activity modification - Arthroscopic instability repair: minimally invasive reattachment of the torn labrum and tightening of the supporting tissue (labral / Bankart repair) so the ball stays centered in the socket - Related shoulder care: instability can occur alongside rotator cuff injury; both can be addressed arthroscopically After surgery, recovery follows a staged shoulder rehabilitation protocol — sling, then range-of-motion, then progressive strengthening. Common questions ## Frequently asked questions What is shoulder instability? Shoulder instability is when the ball of the shoulder (the top of the arm bone) slips partially (subluxation) or fully (dislocation) out of the socket. It often follows a traumatic dislocation that damages the labrum — the rim of cartilage that deepens the socket — and can become recurrent, with the shoulder slipping with progressively less force. What causes a shoulder to keep dislocating? A first traumatic dislocation can tear the labrum and stretch the surrounding ligaments, so the shoulder is more likely to dislocate again. Younger, active patients are at higher risk of recurrence. Repeated instability can cause additional damage to the labrum, bone, and cartilage over time. Does shoulder instability need surgery? Not always. Some patients are managed with physical therapy to strengthen the muscles that stabilize the shoulder. Surgery is considered for recurrent instability, a labral tear, or when activity demands make re-dislocation likely. Dr. Gomoll discusses the right approach based on your exam, imaging, and goals. How is shoulder instability repaired? Most instability is repaired arthroscopically — through small portal incisions — by reattaching the torn labrum and tightening the supporting tissue (often called a Bankart or labral repair) so the ball stays centered in the socket. The minimally invasive approach generally means less soft-tissue disruption than open surgery. What is recovery like after instability repair? Recovery is staged to protect the repair: a period in a sling, then gradual range-of-motion, then progressive strengthening over several months, guided by a shoulder rehabilitation protocol. Following the protocol closely is important to prevent re-injury. Dr. Gomoll evaluates shoulder instability at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary. ## Shoulder slipping or dislocating? Schedule a consultation with Dr. Gomoll to evaluate your shoulder and discuss repair options. Schedule a Consultation Call 646-917-7441 --- ## Regenerative Medicine & PRP Injections | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/stemcells/ Summary: Regenerative medicine with Dr. Andreas Gomoll at HSS — platelet-rich plasma (PRP) injections for osteoarthritis pain, plus FDA-supervised clinical trials of cartilage stem-cell therapies. Honest framing of what stem cells can and cannot do. Performed by Andreas H. Gomoll, MD — previous Director of the Orthopedic Program in Brigham & Women's Center for Regenerative Medicine; current investigator on FDA-supervised cartilage cell-therapy trials. View full credentials & CV → Regenerative medicine is a rapidly evolving field, but there are many misconceptions about what these treatments can and cannot do. One common misunderstanding is that stem-cell injections can regrow cartilage or meniscus tissue. Current scientific evidence does not support that claim. Dr. Gomoll has studied regenerative medicine through both laboratory research and clinical trials. While regenerative treatments have not been shown to regenerate cartilage or meniscal tissue, research suggests they may help improve pain and function in selected patients. We currently offer platelet-rich plasma (PRP) injections. Investigational stem-cell treatments are available only through approved clinical trials. Overview ## What is regenerative medicine in orthopedics? Regenerative medicine is a category of treatments that uses the body's own cells, growth factors, and other biologic substances to support healing and improve symptoms. In orthopedics, the most common treatments include platelet-rich plasma (PRP) injections and various forms of stem-cell therapy. Examples of stem-cell treatments include bone marrow concentrate, adipose-derived cells, amniotic fluid products, and umbilical cord blood mesenchymal stem cells. Peptide-based therapies have also gained attention in recent years, although their use in orthopedics remains largely unproven and continues to be studied. Current evidence does not support the claim that commercially available stem-cell injections can regrow cartilage or meniscus tissue. Nevertheless, this claim is often used by commercial stem-cell clinics to market treatments that are typically not covered by insurance and require significant out-of-pocket costs. Dr. Gomoll has studied regenerative medicine through both published research and clinical trials. His work has shown that while these treatments do not regenerate cartilage or meniscal tissue, they may help improve pain and function in selected patients. These improvements can be meaningful, but they are different from the tissue-regeneration claims often made in marketing materials. Candidacy ## Who is a candidate? Candidates for PRP typically have: - Symptomatic osteoarthritis of the knee, shoulder, or other large joint - Pain that has not responded adequately to NSAIDs, physical therapy, or activity modification - A desire to delay or avoid surgery, or to bridge the gap before a planned procedure - No active infection, hematologic disorder, or contraindication to platelet-driven inflammation Patients with a focal cartilage defect (rather than diffuse arthritis) may be better served by cartilage repair surgery. Patients with bone-on-bone arthritis may need partial or total knee replacement. Investigational stem-cell therapy is available only through our active clinical trials. In-office treatment ## Platelet-rich plasma (PRP) PRP is currently the only regenerative-medicine injection offered by Dr. Gomoll outside of clinical trials. It is prepared in the office on the day of treatment: 1 Blood draw Routine blood draw from the patient's arm (typically 30–60 mL). 2 Centrifugation Centrifugation to separate the platelet-rich plasma from red blood cells. 3 Guided injection Sterile injection of the PRP into the affected joint, often under ultrasound guidance. Platelets contain anti-inflammatory cytokines and growth factors (PDGF, TGF-β, VEGF, IGF-1) that can improve symptoms in osteoarthritis. Multiple randomized trials have demonstrated PRP superiority over gel (hyaluronan) injections for symptomatic knee osteoarthritis. Setting expectations ## PRP vs. gel injections vs. commercial "stem cell" injections None of these injections regrow cartilage — but they are not equivalent, and being clear about what each can and cannot do is the most important part of choosing one. This table compares the options patients ask about most for osteoarthritis pain. Injection What it is What the evidence supports Regrows cartilage? Coverage Platelet-rich plasma (PRP) Concentrated platelets from your own blood, delivering anti-inflammatory cytokines and growth factors Improves pain and function in knee osteoarthritis; studies show superiority over gel (hyaluronan) injections No Generally cash-pay (not covered) Hyaluronic acid ("gel") injection A lubricating viscosupplement injected into the joint Can relieve symptoms for some patients; generally outperformed by PRP in comparative knee-OA studies No Often covered for knee OA (varies by plan) Off-the-shelf commercial "stem cell" injection Marketed cell products sold by some commercial clinics outside of regulated trials The claim that these regenerate cartilage or meniscus is not supported by current evidence No Currently there are no FDA-approved stem-cell injections available in the US for joint injections. Dr. Gomoll does not offer them outside of clinical trials. The expectation is that the recent trials will lead to official approval and commercial availability soon. Investigational cell / biologic therapy (clinical trial) True cartilage cell and biologic-implant therapies studied under FDA supervision (e.g. HYALEX, Cartistem, ReNu) Under active investigation; outcomes are being formally studied and are not yet established Being studied — not established Through the clinical trial The honest bottom line: PRP can be a genuinely useful tool to improve osteoarthritis pain and function and to delay or bridge toward surgery — but it does not rebuild lost cartilage. Treatments that claim to regrow tissue belong in regulated clinical trials, not in cash-pay marketing. Research ## Investigational stem-cell trials True stem-cell and biologic-implant therapies for cartilage are available only through FDA-supervised clinical trials. Dr. Gomoll has investigated several: - Hyalex EFS — currently enrolling. The HYALEX® Knee Cartilage System for replacement of femoral condyle cartilage and bone defects. See trial details or request a consultation to ask about eligibility - ReNu™ (amniotic fluid stem cells) — randomized trial completed; expected to become available again in the future - Cartistem® (umbilical-cord blood mesenchymal stem cells) — Phase I/IIa trial completed. Phase III trial starting in 2026 - Atlas Knee System — closed to enrollment, in follow-up - NUsurface® / VENUS (artificial meniscus) — closed to enrollment, in follow-up We currently are not offering amniotic fluid injections outside of clinical trials, but expect them to become available again in the future. Perspective ## Dr. Gomoll's perspective on regenerative medicine Dr. Gomoll's view of regenerative medicine is grounded in his own research rather than in marketing. As former Director of the Orthopedic Program in Brigham & Women's Center for Regenerative Medicine and a current investigator on FDA-supervised cartilage cell-therapy trials, he has studied these treatments both in the basic-science laboratory and through clinical trials. That work established a clear distinction: while these therapies do not regenerate cartilage or meniscus, pain and function can be meaningfully improved — a real benefit, but a different one than is often advertised. For that reason, the practice offers PRP as an evidence-supported option for osteoarthritis symptoms, declines to sell off-the-shelf "stem cell" injections that promise tissue regrowth, and reserves true cell and biologic therapies for regulated clinical trials where outcomes are formally studied. Patients are given a straightforward account of what an injection can and cannot do before deciding. Before your visit ## Preparing for an injection For PRP, avoid NSAIDs (Advil, Aleve, aspirin) for 7 days before the injection — anti-inflammatories can blunt the platelet response. Continue all other medications unless otherwise instructed. Eat normally. Plan a quiet day after the injection — no impact exercise. See our before-surgery checklist for general medication-stop guidance (most pre-op rules apply to surgical procedures, not in-office injections). Technology ## Materials & technology we use - FDA-cleared PRP centrifuge systems — for consistent platelet concentration - Ultrasound guidance — for accurate intra-articular needle placement - Sterile single-use injection kits - Investigational implants and cells — HYALEX, Cartistem, ReNu, Atlas, NUsurface (clinical trial only — see trials page) Informed decision ## What to know & the limits of injection therapy PRP is an in-office injection, not a surgical procedure, and is generally well tolerated — but it is not without considerations. As with any joint injection, you may experience temporary injection-site pain or a flare of soreness and swelling for a day or two, and there is a small risk of infection at the injection site. Most importantly, response varies and is not guaranteed: PRP improves symptoms for many patients with osteoarthritis, but it does not rebuild cartilage, and some patients see little benefit. Regenerative-medicine injections are not a cure for arthritis and are not a substitute for surgery when surgery is indicated. PRP is designed to relieve pain and improve function — not to regrow tissue — and results depend on the severity of the arthritis, the joint treated, and individual factors. Dr. Gomoll will review realistic expectations and whether an injection, a clinical trial, or another treatment best fits your joint. Recovery ## Follow-up & outcomes Patients can walk and resume daily activities the same day after PRP. Avoid impact exercise and NSAIDs for 1 week to allow the platelet-driven response to develop. Symptom improvement typically appears over 2–6 weeks and may continue for several months. A repeat injection at 3–6 months may be considered based on response. If you have not had adequate relief from PRP, surgical options may be appropriate — see cartilage repair, meniscal procedures, or arthritis surgery. Common questions ## Frequently asked questions Can stem-cell injections regrow cartilage or meniscus? Outside of FDA-supervised clinical trials, no — and that is the most important point on this page. The common claim that off-the-shelf stem-cell injections regenerate cartilage or meniscus is not supported by current scientific evidence. This claim is often promoted by commercial 'stem cell clinics' to justify high cash-pay charges (insurance does not cover these treatments). Dr. Gomoll has investigated regenerative medicine extensively in both the basic-science lab and through clinical trials. What benefit does PRP actually provide? Platelets contain anti-inflammatory and growth factors that can meaningfully improve pain and function in osteoarthritis. Multiple studies have shown PRP outperforms gel (hyaluronan) injections for symptomatic knee osteoarthritis. PRP does not regrow cartilage, but it can improve symptoms — a real, evidence-supported benefit. How is PRP prepared? PRP is prepared in the office on the day of treatment. We perform a routine blood draw from your arm, then place the blood in a centrifuge that separates the platelet-rich plasma from red blood cells. The platelet-rich layer is drawn off and injected into the affected joint under sterile conditions, often with ultrasound guidance. Are stem-cell trials available? Yes. Dr. Gomoll has run FDA-supervised clinical trials of umbilical-cord mesenchymal stem cells (Cartistem®) and amniotic-fluid injections (ReNu™). A new Cartistem trial is starting up — see our active clinical trials page for participation details and contact information. How much do PRP injections cost? PRP is generally not covered by insurance and is offered as a cash-pay service. The price covers the blood draw, centrifugation, and ultrasound-guided injection. Contact our office for current pricing. Investigational stem-cell and biologic therapies are provided only through clinical trials, which have their own enrollment and cost considerations. Am I a candidate for PRP? PRP is most often used for symptomatic osteoarthritis of the knee, shoulder, or another large joint that has not responded adequately to NSAIDs, physical therapy, or activity modification, in patients without active infection or a hematologic disorder. Patients with a focal cartilage defect rather than diffuse arthritis may be better served by cartilage repair, and patients with bone-on-bone arthritis may need partial or total knee replacement. Dr. Gomoll will help determine which path fits your joint. Is PRP a surgery? What is recovery like? No — PRP is an in-office injection, not a surgical procedure. There is no anesthesia, incision, or operating room. The visit takes about 30–45 minutes; you can walk and resume normal daily activities the same day. Avoid impact activity and NSAIDs for about a week so the platelet-driven response can develop, with symptom improvement typically appearing over 2–6 weeks. Dr. Gomoll offers PRP and runs FDA-supervised regenerative-medicine clinical trials at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor in Midtown Manhattan, caring for patients from across New York City, the tri-state area, and beyond who want an honest, evidence-based answer about what regenerative medicine can do for their joint. See our location and directions or request an appointment. Medical disclaimer This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Orthopedic care should always be discussed with a board-certified orthopedic surgeon who has reviewed your imaging, history, and physical examination. Individual outcomes vary based on diagnosis, anatomy, comorbidities, and other factors. Investigational therapies are available only through regulated clinical trials. ## Want to discuss PRP or trial eligibility? Schedule a consultation or call the office to find out whether PRP or a clinical trial is right for you. Schedule a Consultation Call 646-917-7441 --- ## What Will My Scar Look Like? | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/what-will-my-scar-look-like/ Summary: Real surgical scar photos from Dr. Gomoll Most patients are curious about what their incision will look like once healed. Below are real photos from Dr. Gomoll's patients across the most common knee procedures — ACL reconstruction (BTB, Quad Autograft, Allograft, BEAR), high tibial osteotomy (HTO), MISHA implant, and combined patellar procedures (TTO + MACI + MPFL). Final appearance varies by skin type, age, and time since surgery. ## Healed surgical scars Each photo is labeled with the procedure performed. For more detail on the procedures themselves, see our surgical treatments overview or the cartilage repair and meniscal procedures pages. ACL — Quad Autograft ACL — BTB (left), Allograft (right) ACL — Quad Autograft MISHA implant HTO — High Tibial Osteotomy MISHA implant TTO + Patellar MACI + MPFL reconstruction ACL — BEAR® Implant HTO — High Tibial Osteotomy TTO — Tibial Tubercle Osteotomy ## What affects scar appearance Scar appearance depends on several factors — most of which are not under Dr. Gomoll's control: - Your individual skin type and tendency to form keloid or hypertrophic scars - Age and overall skin health - Time since surgery — most scars continue to fade for 12–18 months - Sun exposure on the healing incision (use sunscreen on the scar for the first year) - Whether you followed wound-care instructions in the early post-op period — see our after-surgery instructions for the showering and submersion timeline If you have specific concerns about scarring, raise them at your pre-op consultation with Dr. Gomoll. ## Questions about your specific procedure? Schedule a consultation to discuss incision placement and expected healing. Schedule a Consultation Call 646-917-7441 --- # Case Studies ## Patient Success Stories | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/success-stories/ Summary: Real patient stories from Dr. Andreas Gomoll Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Stories # Real patients. Real outcomes. Knee and shoulder patients treated by Dr. Andreas Gomoll at the Hospital for Special Surgery — and the active lives they returned to after cartilage repair, ACL reconstruction, osteochondral allograft, partial knee replacement, and joint-preserving osteotomy. Patient Video Stories ## Watch their stories in their own words. Each of these patients sat down on camera to share the injury, the procedure, and the return to the activities they love. Click any video card to read the full story and watch. Video Patrick Knee Cartilage Transplant After 11 Iron Man finishes and years of wear and tear, Patrick was told he needed a knee replacement. Dr. Gomoll instead performed a knee cartilage transplant — and Patrick is back racing in Iron Man. Read & watch story → Video Pamela Osteochondral Allograft Transplantation Pamela shares her experience with osteochondral allograft transplantation for a knee cartilage defect — a joint-preserving alternative to early replacement performed by Dr. Gomoll. Read & watch story → Video Gianna Patient Transformation Story From a childhood unable to ice skate or keep up with friends, Gianna shares the multi-year transformation that brought her back to the activities she loves after surgery with Dr. Gomoll. Read & watch story → Patient Video Jennifer High Tibial Osteotomy + ACL Reconstruction A project manager and lifelong volleyball player struggled with recurrent knee swelling after a previous ACL and meniscus surgery. Dr. Gomoll and Dr. Strickland recommended a combined HTO + ACL reconstruction — and Jennifer is back to playing volleyball 3–5 times a week. Read & watch story → Patient Video Michele ACL Repair with the BEAR Implant Michele shares her experience with ACL repair using the BEAR implant — a bridge-enhanced ACL restoration that preserves the patient's own ligament — performed by Dr. Gomoll at HSS. Read & watch story → Patient Video Amanda Hyalex Cartilage Implant (FDA Trial) After years of debilitating knee pain, Amanda participated in an FDA trial of the new Hyalex synthetic cartilage device with Dr. Gomoll — and shares how it helped restore her quality of life. Read & watch story → Video Partial Knee Replacement Partial Knee Replacement An athlete who played sports through high school and college talks about how aging injuries led to a partial knee replacement — and how he's feeling now. Read & watch story → Video Fresh Osteochondral Allograft Fresh Osteochondral Allograft Transplantation A lifelong CrossFit and football athlete describes the cartilage defect he sustained in high school football and the fresh osteochondral allograft transplantation that returned him to training. Read & watch story → In Their Own Words ## Letters & notes from patients. Unedited words sent to Dr. Gomoll after recovery — across cartilage repair, ACL reconstruction, osteochondral allograft, meniscus transplantation, and high tibial osteotomy. Color-coded by the procedure each patient had. Cartilage Repair “ Dear Dr. Gomoll, thank you so much for repairing my knee. I am more than thrilled to be back out running, and hiking pain free. Here's a picture of me from this summer on top of Mt. Katahdin, up in Maine. LC, 2 years after osteochondral allograft transplantation Osteotomy “ Thanks Dr. Gomoll. The knee is doing great — I'm running, jumping, and doing 1-leg squats as well as I did when I was 30. No pain during, just some soreness after. GT, 3 years after HTO Osteotomy “ Hello Dr. Gomoll, I was a patient of yours at Brigham and Women's Hospital in 2013/2014, receiving a cartilage transplant and high tibial osteotomy in January 2014. I want to tell you that the surgery changed my life — I've had full range of motion in my knee, I'm very active (I've lost 75 lbs in the past year) and have very little to no discomfort doing any activities. JD, 2 years after fresh osteochondral allograft transplantation and HTO Meniscus “ For the first time in ten years I don't have pain in my knee. AD, 2 months after distal femoral osteotomy and lateral meniscal allograft transplantation Osteotomy “ As always your kindness and patience astounds me. It's a good thing you are so calm and grounded so you can keep me from totally freaking out. DN, 4 months after ACI and tibial tubercle osteotomy ACL Reconstruction “ Last May, you repaired a torn ACL in my right knee using an allograft procedure. I just wanted to report that I have now been able to start playing basketball again, which was one of the primary reasons for having the surgery. I still have some very slight, occasional discomfort in the knee, but absolutely no instability, even on awkward landings during basketball. So thank you and the entire team at Brigham and Women's and the Faulkner. DS, 8 months after ACL reconstruction Meniscus “ You performed a meniscus transplant and knee realignment. Since my surgeries I am doing fantastic. My knee is fully functioning with a range of motion around 130–140 degrees. I am competitively running now. I ran cross country and indoor track for my high school. I plan on running outdoor track this spring as well. Thanks to you I am finally getting back to how I used to be before I hurt my knee. KN, 18 months after meniscus transplantation and distal femoral osteotomy Osteotomy “ I just wanted to say thank you for all you have done for me. I am sure I have said it to you in person, but I just wanted you to know that I thank God that I found a doctor that could help me with my knee. It is hard to find a good doctor in these days and times. I just want you to know by one of your patients that you are truly appreciated for what you do and the care that you give. DB, 6 months after ACI and tibial tubercle osteotomy Cartilage Repair “ Happy new year to you! Thank you for the best Christmas present I have ever received! No Pain!!!!! SL, 2 months after ACI Non-Surgical Care “ I want to thank you again for the time you spent with me. I really felt as though you have a heart and never felt that you were trying to sell me a surgery. Best regards, J. JM, non-operative treatment for knee arthritis Cartilage Repair “ The upside of my bad knee is that I had the opportunity to meet you. Your expertise is unparalleled and your patient care is above anything that "thank you" would cover. I cannot tell you how much I appreciate all you have done. KP, 2 months after osteochondral allograft transplantation Cartilage Repair “ Working with you all has really been an eye opener for how healthcare should work. MS, pre-op for ACI Osteotomy “ 3 lift tickets at Okemo Mountain — $177. Two hot chocolates and an ice-cold beer at the Summit Lodge — $12.85. Five hours on the slopes with my two favorite boys and my new, virtually pain-free knee — PRICELESS! Mission accomplished — skied 5 hours (with many breaks) on Monday. Stayed home Tuesday just to make sure there wasn't any pain or swelling, and guess what — none! Going back for more tomorrow! Can't thank you enough! DN, 12 months after ACI and tibial tubercle osteotomy Osteotomy “ Patient JC crossing the finish line of the 2015 Boston Marathon, 18 months after high tibial osteotomy surgery with Dr. Gomoll. JC, 18 months after HTO ### Notes & letters from the mailbox AL, treated for persistent patellar instability after prior surgery HM, 18 months after double osteochondral allograft transplantation Take the Next Step ## Could one of these procedures be right for you? Bring your imaging and a clear question to a sub-specialty consultation with Dr. Gomoll — in-person at HSS in New York. Schedule a Consultation ☎ (646) 917-7441 All Procedures --- ## Amanda — Hyalex Cartilage Implant FDA Trial | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/amanda/ Summary: After years of debilitating knee pain, Amanda participated in an FDA trial of the new Hyalex synthetic cartilage device with Dr. Andreas Gomoll at the Hospital for Special Surgery — and shares how it helped restore her quality of life. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video · Clinical Trial # A new synthetic cartilage implant — tested in an FDA trial. After years of debilitating knee pain, Amanda participated in an FDA trial of the Hyalex synthetic cartilage device with Dr. Gomoll — and shares how the procedure helped restore her quality of life. Watch the story Your browser does not support the video tag. About this story ## Helping advance the field — one patient at a time. For patients with a focal cartilage defect that hasn't responded to conservative care, the standard options are osteochondral allograft transplantation, autologous chondrocyte implantation (MACI), and — in advanced cases — partial or total knee replacement. New options are continually under investigation. The Hyalex synthetic cartilage implant is one such option, designed to replace damaged focal cartilage with a polymer material that mimics the mechanical properties of natural cartilage. As an investigational device, it's currently available only through FDA-approved clinical trials — and Hospital for Special Surgery is among the centers participating. Amanda shares her experience as a participant in that trial. For an overview of current trials Dr. Gomoll is involved in, see our clinical trials page. About the procedure ### The Hyalex Cartilage Implant Hyalex is a new synthetic cartilage implant designed to replace damaged focal cartilage with a polymer material that mimics the mechanical properties of natural cartilage. As an investigational device, it's currently available only through FDA-approved clinical trials at a small number of centers — Hospital for Special Surgery being one of them. More on clinical trials → ### Why Clinical Trials Matter Patients like Amanda who participate in well-designed clinical trials help advance the field — making new joint-preserving options available to future patients. Dr. Gomoll's practice at HSS includes ongoing research and trials in cartilage repair and joint preservation. Learn about current trials → ## Amanda Condition Focal knee cartilage defect — chronic, pain-limiting Procedure Hyalex synthetic cartilage implant (FDA clinical trial) Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Standard cartilage-procedure rehab protocol with monitored progression Return to activity Restored quality of life · return to daily activity without prior pain Outcome From years of debilitating knee pain — to a restored quality of life through participation in the Hyalex FDA clinical trial. Related Specialty Care ## If you're facing a similar problem Procedure ### Cartilage Repair All cartilage repair and transplantation options for focal knee cartilage defects. Research ### Clinical Trials Current clinical trials Dr. Gomoll is participating in — for patients interested in advancing the field. Consultation ### Book an Appointment Wondering if you might be a candidate for a clinical trial? Bring your imaging to a sub-specialty consultation. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Fresh Osteochondral Allograft — CrossFit Athlete Patient Testimonial | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/fresh-oca-patient/ Summary: A lifelong CrossFit and football athlete describes the cartilage defect he sustained in high school football, the failure of an earlier reattachment, and the fresh osteochondral allograft transplantation by Dr. Andreas Gomoll that returned him to training. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # A high-school football cartilage break, a failed reattachment — and a fresh donor plug that fit perfectly. A lifelong CrossFit and football athlete describes the cartilage defect he sustained in 9th-grade football, the screws that backed out from the earlier reattachment, and the fresh osteochondral allograft transplantation by Dr. Gomoll that gave him a definitive solution. Watch the story Transcript I love to do CrossFit — it's a big part of my life. It can consist of anything from running to lifting weights. Ninth grade and high school football, I was hit in the knee — it broke off a piece of cartilage that was reattached by a previous doctor. Over a duration of time the screws backed out and created some damage in there. When they reattached it, the piece of cartilage ended up being a lower spot than it should have been. He's a young active guy who essentially lived in the gym and defined himself by being active and being healthy. He had surgery on his right knee a long time ago — he had some cartilage damage. It was fixed, but… it really didn't feel like I was getting explanations on what was going on with my knee and why things were happening and what I was experiencing. It wasn't just, sorry, we didn't see enough going on. So you kind of laid it out — maybe when you're here in your 50s or 60s we'll do a knee replacement. For him, the best was a cartilage transplant — and within cartilage transplants, what is called a fresh osteochondral allograft, meaning we take donor tissue. The damaged area in his knee I removed, and from the donor tissue I made a plug of bone and cartilage that fits the damaged area perfectly. He knows what he's doing, and he's a very confident surgeon. It's not just, we've got to go in and scope your knee and see what's going on — we're going to find out what's going on and then we're going to fix the problem. In his words ## A definitive answer after years of partial fixes. I love to do CrossFit — it's a big part of my life. It can consist of anything from running to lifting weights. Ninth grade and high school football, I was hit in the knee — it broke off a piece of cartilage that was reattached by a previous doctor. Over time the screws backed out and created some damage in there. When they reattached it, the piece of cartilage ended up being a lower spot than it should have been. It really didn't feel like I was getting explanations on what was going on with my knee and why things were happening and what I was experiencing. “He knows what he's doing, and he's a very confident surgeon. It's not just, we've got to go in and scope your knee and see what's going on — we're going to find out what's going on and then we're going to fix the problem.” — Fresh OCA patient For him, Dr. Gomoll said the best option was a cartilage transplant — and within cartilage transplants, what's called a fresh osteochondral allograft, meaning donor tissue. He removed the damaged area in my knee, and from the donor tissue he made a plug of bone and cartilage that fits the damaged area perfectly. About the procedure ### Fresh Osteochondral Allograft (OCA) A "fresh" osteochondral allograft is donor bone and cartilage harvested from a tissue-matched donor and used within a limited time window to maintain the viability of the cartilage cells. Dr. Gomoll precisely removes the damaged area in the patient's knee, then shapes a matching plug from the donor tissue that fits the defect exactly — restoring the original joint surface contour and a healthy cartilage layer. More on cartilage repair → ### When a Previous Repair Has Failed This patient had a piece of cartilage reattached by a prior surgeon after a football injury. Over time, the fixation screws backed out and the cartilage settled below the joint surface — leaving a residual defect that continued to generate symptoms. Fresh OCA is the standard option for patients whose earlier cartilage procedure has failed but who are too young for joint replacement. Learn more → ## Fresh OCA Patient CrossFit athlete · Former high school football player Condition Focal cartilage defect — recurrent after failed reattachment Procedure Fresh osteochondral allograft transplantation Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Standard OCA rehab protocol with monitored progression Return to activity Return to CrossFit and active lifestyle Outcome From a failed cartilage reattachment with backed-out screws and ongoing damage — to a definitive cartilage transplant that fits the defect perfectly. Related Specialty Care ## If you're facing a similar problem Procedure ### Cartilage Repair Fresh osteochondral allograft, MACI, and cartilage transplantation for focal defects — including patients with failed prior cartilage procedures. Procedures ### All Surgical Treatments The complete list of knee and shoulder procedures Dr. Gomoll performs. Consultation ### Book an Appointment Failed prior cartilage procedure that's still causing symptoms? Bring your records and imaging to a sub-specialty consultation. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Gianna — A Decade of Knee Pain to a Pain-Free Life After Cartilage Transplant | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/gianna/ Summary: Diagnosed with osteochondritis dissecans at age 8, Gianna grew up with constant knee pain — until a cartilage transplant by Dr. Andreas Gomoll at the Hospital for Special Surgery finally gave her her life back. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # A decade of knee pain since age 8 — and the first day she could remember being pain-free. Diagnosed with osteochondritis dissecans (OCD) at age 8, Gianna grew up watching from the sidelines. A childhood microfracture bought time but the pain returned in 10th grade. Dr. Gomoll performed a cartilage transplant — and within 5½ weeks post-op, she knew it was working. Watch the story Transcript I remember going to a birthday party that was ice skating, and I couldn't participate. My knees couldn't withstand the demands of the ice, and I couldn't do the gliding motion of the skates. So I had to sit there — like I did a lot when I was younger — and just watch a lot of kids do the things that I wanted to do. A lot of people would think, well, it's just ice skating. But when you're younger and it's the wintertime, everybody goes ice skating every other weekend. My condition started when I was 8. It's called osteochondritis dissecans. I'd be on the soccer field, and one day I came off when I was 8 years old and I looked at my mom and I said, my knees hurt. I was like, I can't, I can't do this anymore. As I got older I just played through it because I loved the sport so much and I didn't want to miss out. At about 12 years old we came to HSS, and I saw another doctor here who performed a surgery called a microfracture — where they drilled tiny little holes in your patella and the surrounding bones and trick the body into thinking there's an injury so that blood will go and help heal the issue. That bought me a lot of time and a lot of pain-free moments. But when I got to 10th grade, the pain was coming back. I was like, I just I just can't do this. So I kept going. Beginning of my freshman year of college I went back to that doctor who did my surgery and I said, you know, you did wonders for me — you helped me be a kid at certain points — but the pain is just coming back, and I don't know what to do. Gianna was referred to me by a friend and colleague here at HSS who's a pediatric orthopedic surgeon. She was 18 at the time. This was over a year ago. She had pain — she said for as long as she could remember. She grew up with the pain. We ended up doing a cartilage transplant for her, and at the same time repairing some of the bony changes that had happened. Recovery time — I was non-weight-bearing for a good six weeks, so it was hard. I think it's important for a lot of people to know that recovery is just a piece of a lifetime that you can have without that pain. At the five-and-a-half-week post-op time I already felt a difference. I already knew that this pain was not going to last long. Since I was put in my second brace and it gave me more mobility, I went in the gym every day even on crutches and I was able to lose 43 pounds. He definitely gave me my life back, for sure. She came back and she said, this is literally the first time as long as I can remember that I don't have any pain. And that's the greatest thing — someone who grew up with this pain, you want to find your answer. Anybody with a chronic situation knows that sometimes there is no quick fix. I learned that very quickly. But I asked Dr. Gomoll at the first appointment, I said, is this going to be my answer? Am I going to be done? Is this going to be my endgame? And he said, well, it all depends on your definition of success. I said, I just want to be active without having pain. I want to be able to walk up that flight of steps without having to take a break in between at 18 years old. He looked at me and he said, well, if that's your definition of success, that's what we're going to try and reach. He never gave me a false impression of what the surgery was going to be. It didn't turn out that way — exactly what he said was going to happen and how I should feel is exactly what happened. In Gianna's words ## “I just want to walk up that flight of steps without taking a break.” I remember going to a birthday party that was ice skating, and I couldn't participate. My knees couldn't withstand the demands of the ice. I had to sit there — like I did a lot when I was younger — and watch a lot of kids do the things I wanted to do. My condition started when I was 8. It's called osteochondritis dissecans. At about 12 years old we came to HSS, and another doctor here performed a microfracture — drilling tiny little holes in the bone to trick the body into healing the area. That bought me a lot of time and a lot of pain-free moments. But by 10th grade, the pain was coming back. “He said, well, it all depends on your definition of success. I said, I just want to be active without having pain — to walk up that flight of steps without taking a break at 18 years old. He said, if that's your definition of success, that's what we're going to try and reach.” — Gianna Beginning of my freshman year of college I went back. The doctor referred me to Dr. Gomoll. We ended up doing a cartilage transplant, and at the same time repairing some of the bony changes that had happened. Recovery was hard — I was non-weight-bearing for a good six weeks. But at the five-and-a-half-week post-op mark I already felt a difference. I already knew that this pain was not going to last long. Since I was put in my second brace and it gave me more mobility, I went into the gym every day even on crutches and I was able to lose 43 pounds. He gave me my life back. I came back and said: this is literally the first time, as long as I can remember, that I don't have any pain. Exactly what he said was going to happen — is exactly what happened. About the procedure ### Osteochondral Allograft Cartilage Transplantation For larger or recurring cartilage defects that have already failed a microfracture (as in Gianna's case), an osteochondral allograft transplant replaces the defect with a precisely-sized plug of donor bone and cartilage — restoring the original joint contour and the protective cartilage surface. The added bony repair addresses any structural changes underneath the cartilage. More on cartilage repair → ### Osteochondritis Dissecans (OCD) OCD is a condition in which a focal area of cartilage and the bone beneath it lose blood supply, weaken, and can fragment off into the joint. In children, microfracture sometimes works as a temporizing measure — but recurrent OCD in young adults usually needs definitive replacement of the surface. Learn more → ## Gianna Lifetime knee pain since age 8 Condition Osteochondritis dissecans (OCD) of the knee — chronic, post-microfracture Procedure Cartilage transplant + repair of bony changes (combined) Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery 6 weeks non-weight-bearing · braced with progressive mobility Return to activity Pain-free for the first time in memory · lost 43 lbs during recovery Outcome From a decade of chronic knee pain since age 8 — to the first pain-free day she could remember, post-op. Related Specialty Care ## If you're facing a similar problem Procedure ### Cartilage Repair Osteochondral allograft and cartilage transplantation for focal defects including OCD lesions and post-microfracture recurrence. Procedures ### All Surgical Treatments The complete list of knee and shoulder procedures Dr. Gomoll performs. Consultation ### Book an Appointment Have a chronic cartilage problem that hasn't resolved? Bring your MRI to a sub-specialty consultation. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Jennifer — Volleyball Player Back to 3–5 Games a Week After HTO + ACL Reconstruction | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/jennifer/ Summary: After a previous ACL and meniscus surgery left Jennifer with recurrent knee swelling, Dr. Andreas Gomoll and Dr. Sabrina Strickland at the Hospital for Special Surgery performed a combined high tibial osteotomy and ACL reconstruction. Two years later she Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # From recurrent knee swelling — back to volleyball 3 to 5 times a week. After a prior ACL and meniscus surgery left Jennifer with recurrent knee swelling, Dr. Andreas Gomoll and Dr. Sabrina Strickland performed a combined high tibial osteotomy and ACL reconstruction. Two years later: 108+ Pilates classes and back to playing volleyball 3–5 times a week. Watch the story Your browser does not support the video tag. In Jennifer's words ## Two surgeries, one recovery, back to the sport she loves. The surgery completely changed my life. I was able to get back into volleyball, something that I really wanted to do. My name is Jennifer. I am a project manager in a logistics company. I like to play volleyball and Pilates in my free time. I got into volleyball in high school. The injury first started with a micro tear when I was playing volleyball during my offseason. I went to the ER. They said I had a micro tear, but that it could naturally get better. I didn't really listen about not playing sports, so I went to play handball that summer and I completely tore it. Due to my injury, I had to have an ACL and meniscus surgery with a different doctor in town — back in 2010. When I got back into volleyball, my knee started swelling again. I specifically wanted to find a doctor from HSS. Dr. Strickland and Dr. Gomoll are very active people and I felt like that caused an instant connection. They recommended the HTO surgery and also the ACL reinforcement — so I was able to do both surgeries with both doctors. “Dr. Strickland and Dr. Gomoll are very active people, and I felt like that caused an instant connection.” — Jennifer They had to explain what was going on, so they actually had a visual representation of the knee joints and they walked through it step by step. It was easy for me to make the decision because I wanted to get back into volleyball. The goal of the HTO is to create a gap between my two joints, to prevent swelling whenever they brush up against each other during exercise — my meniscus was gone, or half of it was naturally degraded. On the day of surgery, Dr. Gomoll started with the HTO. Afterwards, Dr. Strickland came in and did the ACL reinforcement. After surgery, I had a month where I couldn't put pressure on my left foot. Then I was able to slowly put weight on. I was doing PT almost three times a week for a couple of months. Afterwards, I got back into Pilates. It's been 2 years since my surgery. I've reached over 108 classes for my Pilates. The surgery has completely changed my life for the better. I wasn't expecting to play this much volleyball — I play three to five times a week. Overall, a very positive experience with Dr. Gomoll and Dr. Strickland's team. I'm a very efficient person, so I appreciate their team being very efficient. I was able to relate to them and that helped ease my worries. I was able to get back into volleyball, something I love — and they were able to change my life for the better. About the procedure ### High Tibial Osteotomy (HTO) HTO is a controlled cut and repositioning of the upper tibia that shifts the mechanical axis of the leg from the worn compartment toward the healthy side — opening up a protective gap on the damaged side of the knee. It's a joint-preserving alternative to partial knee replacement in younger active patients. More on joint preservation → ### ACL Reconstruction ACL reconstruction rebuilds the central knee stabilizer with a tendon graft. In Jennifer's case, the original ACL repair from 2010 was reinforced as part of the same operation — letting both procedures heal together so she could begin a single coordinated rehab program. More on ACL reconstruction → ## Jennifer Project manager · Volleyball player Condition Recurrent knee swelling after prior ACL/meniscus surgery (2010) Procedure High tibial osteotomy + ACL reinforcement (combined) Surgeon Andreas H. Gomoll, MD & Sabrina M. Strickland, MD Hospital Hospital for Special Surgery, NYC Recovery 1 month non-weight-bearing · PT 3× weekly for several months Return to activity 108+ Pilates classes · volleyball 3–5× per week at 2 years post-op Outcome From recurrent knee swelling after a 2010 surgery — to playing volleyball 3–5 times a week and 108+ Pilates classes, two years post-op. Related Specialty Care ## If you're facing a similar problem Procedure ### Joint Preservation HTO, DFO, and TTO — controlled bone cuts that shift load away from the worn compartment and delay or avoid joint replacement in younger active patients. Procedure ### ACL Reconstruction Patient-matched graft selection, BEAR implant for selected acute tears, and revision ACL surgery — for primary and re-injury cases. Consultation ### Book an Appointment Recurrent knee pain or swelling after a prior surgery? Bring your imaging to a sub-specialty consultation with Dr. Gomoll. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Michele — ACL Repair with the BEAR Implant | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/michele/ Summary: Michele shares her experience with ACL repair using the BEAR (Bridge-Enhanced ACL Restoration) implant — a ligament-sparing technique that preserves the patient Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # A torn ACL — restored, not replaced. Michele shares her experience with the BEAR (Bridge-Enhanced ACL Restoration) implant — a ligament-sparing technique that uses a protein-based scaffold to enable the patient's own torn ACL to heal back together, rather than being replaced with a graft. Watch the story Your browser does not support the video tag. About this story ## A new approach to ACL surgery — preserve the ligament, don't replace it. For decades the standard treatment for a complete ACL tear has been reconstruction — removing the torn ligament and replacing it with a graft taken from another tendon. The BEAR implant changes that approach for selected patients seen soon after injury. The BEAR (Bridge-Enhanced ACL Restoration) implant is a small bovine-derived collagen scaffold mixed with the patient's own blood and placed between the two torn ends of the ACL. The scaffold supports the body's natural healing response, allowing the patient's own ACL to heal back together rather than being replaced. Michele shares her experience with this technique performed by Dr. Gomoll. For an overview of all ACL surgery options — traditional reconstruction, BEAR, and revision ACL — see our ACL surgery page. About the procedure ### The BEAR Implant BEAR (Bridge-Enhanced ACL Restoration) is the first FDA-approved alternative to traditional ACL reconstruction. Rather than removing the torn ACL and replacing it with a graft, the BEAR implant — a small protein scaffold mixed with the patient's own blood — is placed between the two torn ends. The scaffold supports the body's natural healing response so the patient's own ACL can knit back together. Best suited to specific tear patterns in patients seen soon after injury. More on ACL surgery options → ## Michele Condition Acute ACL tear Procedure BEAR implant — Bridge-Enhanced ACL Restoration (ligament-sparing) Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Standard ACL post-op rehab protocol with monitored progression Return to activity Return to pre-injury activity goals Outcome A ligament-sparing alternative to traditional ACL reconstruction — preserving Michele's native ACL through a protein scaffold that bridges the torn ends and allows the ligament to heal back together. Related Specialty Care ## If you're facing a similar problem Procedure ### ACL Reconstruction & BEAR All ACL options — traditional reconstruction with allograft or autograft, BEAR implant for selected acute tears, and revision ACL surgery. Procedures ### All Surgical Treatments The complete list of knee and shoulder procedures Dr. Gomoll performs. Consultation ### Book an Appointment Recent ACL injury? Bring your imaging to a sub-specialty consultation to learn whether BEAR is an option for you. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Pamela — Osteochondral Allograft Transplantation Testimonial | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/pamela/ Summary: Pamela shares her experience with osteochondral allograft transplantation (cartilage transplant) for a knee cartilage defect — a joint-preserving alternative to early knee replacement performed by Dr. Andreas Gomoll at the Hospital for Special Surgery. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # An OCA transplant instead of early joint replacement. Pamela shares her experience with osteochondral allograft transplantation — a joint-preserving cartilage transplant — for a focal cartilage defect in her knee. Watch the story About this story ## A cartilage defect doesn't have to mean a knee replacement. For active patients with a focal cartilage defect in the knee — too large for a simpler procedure but too young for joint replacement — osteochondral allograft transplantation (OCA) offers a joint-preserving path. A precisely-sized plug of donor bone and cartilage is matched to the defect, restoring the original joint surface contour. Pamela shares her experience with this procedure performed by Dr. Gomoll. For an overview of the technique, the typical recovery timeline, and which cartilage defects are candidates, see our cartilage repair page. About the procedure ### Osteochondral Allograft Transplantation (OCA) An OCA replaces a focal cartilage defect with a circular plug of bone and cartilage harvested from a tissue-matched donor — restoring the original joint surface contour. It's the standard option for defects too large for microfracture and for patients who want to avoid early joint replacement. More on cartilage repair → ## Pamela Condition Focal knee cartilage defect Procedure Osteochondral allograft transplantation (OCA) — knee Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Staged non-weight-bearing → progressive load → return to activity Return to activity Return to daily activity without the cartilage pain Outcome A joint-preserving alternative to early knee replacement — restoring a healthy cartilage surface in the defect zone with a precisely-sized donor plug. Related Specialty Care ## If you're facing a similar problem Procedure ### Cartilage Repair Osteochondral allograft, MACI, and cartilage transplantation for focal cartilage defects in active patients. Procedures ### All Surgical Treatments The complete list of knee and shoulder procedures performed by Dr. Gomoll. Consultation ### Book an Appointment Bring your MRI to a sub-specialty consultation with Dr. Gomoll at HSS in New York. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Partial Knee Replacement — Patient Testimonial | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/partial-knee-patient/ Summary: A lifelong athlete describes years of aging sports injuries, the failure of non-surgical treatment, and the partial knee replacement performed by Dr. Andreas Gomoll that returned him to pain-free activity. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # Years of aging sports injuries — and surgery only as the last resort. A lifelong athlete describes years of aging sports injuries, the failure of conservative treatment, and the partial knee replacement that returned him to active life with his wife — performed by Dr. Gomoll only after every non-surgical option had been tried. Watch the story Transcript Well, I played a lot of sports in high school and college, which felt good then — but as you get older it doesn't feel quite so good. Some of those injuries that didn't really bother you a lot in your late teens and twenties start to head up over the years. So he was one joint short of the complete orthopedic sports-medicine package. I fixed both shoulders, and then he came to me for his knee that had really started bothering him. We tried non-surgical management — physical therapy, injections — but he reached a point where every step hurt and he really couldn't be as functional as we wanted. One of the reasons I liked him is that surgery was always the last resort. That kind of integrity around somebody who's willing to push off the surgery even though that's how they make their living — that impressed me. As long as I can get you better, that's the goal — it doesn't have to be surgery. So even though orthopedic surgery is in my job description, I would say more than half of the time I can get you better without surgery. If I can't get you better without surgery, then we talk about surgical options. His confidence when he comes in, as well as a really high capability and knowledge of what he's doing — put me at ease every time. My wife and I want to stay active for as long as we can. So it's really important for me to make sure as I get older, when I have issues that arise orthopedically including surgery, that I'm very comfortable with who's going to be my partner — to make sure I'm able to resume those activities as quickly as possible. In his words ## Three procedures with the same surgeon — because surgery was always the last resort. I played a lot of sports in high school and college, which felt good then — but as you get older it doesn't feel quite so good. Some of those injuries that didn't really bother you a lot in your late teens and twenties start to head up over the years. Dr. Gomoll fixed both my shoulders. Then I came to him for my knee, which had really started bothering me. We tried non-surgical management — physical therapy, injections — but I reached a point where every step hurt and I really couldn't be as functional as we wanted. “One of the reasons I liked him is that surgery was always the last resort. That kind of integrity around somebody who's willing to push off the surgery — even though that's how they make their living — impressed me.” — Partial knee replacement patient His confidence when he comes in, plus a really high capability and knowledge of what he's doing — put me at ease every time. My wife and I want to stay active for as long as we can. It's really important for me to make sure that as I get older, when I have orthopedic issues that arise including surgery, I'm very comfortable with who's going to be my partner in what can be a life-altering process — to make sure I'm able to resume those activities as quickly as possible. About the procedure ### Partial (Unicompartmental) Knee Replacement A partial knee replacement resurfaces only the worn compartment of the knee — preserving the healthy bone, cartilage, and ligaments in the remaining compartments. Compared with a total knee replacement, recovery is typically faster and the knee feels more like the patient's natural knee. The trade-off: it's only appropriate when arthritis is confined to one compartment. More on knee replacement options → ### “Surgery as the last resort” Dr. Gomoll's published philosophy: more than half of orthopedic problems can be resolved without surgery. Surgery is only recommended when non-surgical treatment — physical therapy, injections, activity modification — has failed and the patient's quality of life is compromised. This patient explicitly cites that integrity as the reason he trusted Dr. Gomoll with three separate procedures. ## Partial Knee Replacement Patient Lifelong athlete · Both shoulders previously repaired by Dr. Gomoll Condition Unicompartmental knee arthritis (post sports-injury degeneration) Procedure Partial knee replacement (unicompartmental) Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Standard partial-knee post-op rehab protocol Return to activity Pain-free daily activity with his wife — the explicit goal Outcome From every step hurting after failed conservative care — to active life with his wife after Dr. Gomoll's only-when-needed approach to surgery. Related Specialty Care ## If you're facing a similar problem Procedure ### All Knee & Shoulder Procedures From conservative care through partial and total knee replacement — the complete spectrum of treatments Dr. Gomoll offers. Procedure ### Joint-Preserving Options Cartilage repair, allograft transplantation, and osteotomy — alternatives to early knee replacement in younger active patients. Consultation ### Book an Appointment Chronic knee pain that hasn't resolved? Bring your imaging and history to a sub-specialty consultation with Dr. Gomoll. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- ## Patrick — Back Racing Iron Man After a Knee Cartilage Transplant | Dr. Andreas Gomoll Source: https://andreasgomollmd.com/success-stories/patrick/ Summary: After 11 Ironman finishes and a torn ACL on a ski trip, Patrick was told he needed a knee replacement. Instead, Dr. Andreas Gomoll performed an osteochondral allograft cartilage transplant + cadaver ACL reconstruction — and Patrick is back training for Ironman. Menu Call Appointment Directions HomeMeet Dr. Gomoll What We Do Featured Procedures ACL ReconstructionCartilage Repair & TransplantationMeniscal Procedures & TransplantationShoulder Procedures Knee Preservation Meniscal SurgeryCartilage RepairOsteotomyArthritis Surgery Sports & Joint Injuries Ligament SurgeryACL ReconstructionMeniscal ProceduresRotator Cuff Repair Regenerative Medicine Regenerative MedicineStem-Cell Treatment for Cartilage & ArthritisConditionsPatellofemoral PainKnee InstabilityShoulder Instability Success Stories Patient Information ImagingBefore SurgeryDay of SurgeryAfter SurgeryRehab (PT) ProtocolsBracing / Ice MachineWhat Will My Scar Look Like?Disclosures / Conflict of Interest Our Research IntroPublicationsClinical TrialsLinks Media In the NewsVideosShortsBlogNewsletter Contact Book Now Directions Patient Story · Video # “My fear was that triathlons were over.” Now he's training for another Iron Man. After 11 Ironman finishes, multiple half-Ironman and marathon races, Patrick was told he had no cartilage left in one knee — then he tore his ACL on a ski trip. Dr. Gomoll performed a combined osteochondral allograft cartilage transplant and ACL reconstruction with donor tissue. Patrick is back racing. Watch the story Transcript I've done 11 Ironmans. I've also done multiple half Iron Mans and marathons and half marathons — and so I've put a lot of wear and tear on the body. I saw some specialists and they basically told me I had no cartilage anymore. In the meantime I took a ski trip and I proceeded to tear my ACL. For someone who was bigger than my nine-year-old daughter, I would say Patrick is probably the person with the most energy I've met in a long time. So the procedure I had was where they put cadaver cartilage in my knee, and I also had a cadaver ACL replaced. Sometimes doctors get into performing the surgery they like to perform — and I don't think that was the case with Dr. Gomoll. He performed the surgery that was going to get me back to where I needed to be. I'm happy to report — he's even happier than me — that he's now training for an Ironman, and he keeps pushing himself, he's done several races, and he's done amazingly well. He knew my personality, he knew what I was doing. I have two young children, and my goal was to get back so I could play soccer with them, so I could take them skiing, so I could have a healthy lifestyle. But going in, my fear was that — you know, I came from a running background and did triathlons — and my fear was that that was over. He knew before I went into surgery I was still racing. I think that's very important, that the doctor understands what you do and what your lifestyle is, and is honest with you. And I think he is. In Patrick's words ## 11 Ironmans, a torn ACL, and a doctor who understood what was at stake. I've done 11 Ironmans. I've also done multiple half-Ironmans and marathons and half-marathons. I've put a lot of wear and tear on the body. I saw some specialists and they basically told me I had no cartilage anymore. In the meantime I took a ski trip — and I proceeded to tear my ACL. “Sometimes doctors get into performing the surgery they like to perform. I don't think that was the case with Dr. Gomoll. He performed the surgery that was going to get me back to where I needed to be.” — Patrick So the procedure I had was where they put cadaver cartilage in my knee, and I also had a cadaver ACL replaced. He knew my personality, he knew what I was doing. I have two young children, and my goal was to get back so I could play soccer with them, take them skiing — have a healthy lifestyle. Going in, my fear was that triathlons were over. I came from a running background and did triathlons, and my fear was that that was finished. He knew before I went into surgery I was still racing. I think that's very important — that the doctor understands what you do, and is honest with you. He is. I'm now training for an Ironman, and I keep pushing myself. I've done several races, and amazingly well. About the procedure ### Osteochondral Allograft Transplantation (OCA) Osteochondral allograft transplantation uses a precisely-sized plug of donor bone and cartilage to fill a focal cartilage defect — replacing the worn area with healthy joint surface from a tissue-matched donor. It's the standard joint-preserving option for larger defects in active patients who want to avoid early joint replacement. More on cartilage repair → ### ACL Reconstruction with Allograft For Patrick, the ACL was reconstructed using cadaver (allograft) tissue in the same operation — letting the cartilage transplant and ligament rebuild heal together so he could begin a single coordinated rehab program. More on ACL reconstruction → ## Patrick Endurance athlete · 11× Ironman finisher Condition End-stage cartilage loss in the knee + acute ACL tear Procedure Osteochondral allograft (cartilage transplant) + ACL reconstruction with cadaver graft Surgeon Andreas H. Gomoll, MD Hospital Hospital for Special Surgery, NYC Recovery Staged return to running and cycling under Dr. Gomoll's supervised plan Return to activity Training for Ironman again · several completed races post-op Outcome From “no cartilage left” and a torn ACL on a ski trip — to training for Ironman again and posting strong race results. Related Specialty Care ## If you're facing a similar problem Procedure ### Cartilage Repair Osteochondral allograft, MACI, and cartilage transplantation for focal defects in active patients of every age. Procedure ### ACL Reconstruction Patient-matched graft selection — autograft or allograft — for primary tears, revision cases, and return to high-level sport. Consultation ### Book an Appointment Bring your MRI to a sub-specialty consultation. Dr. Gomoll sees patients at HSS in New York. ## Read more patient stories Hear from more of Dr. Gomoll's patients in their own words about how they got back to the lives they love. All Success Stories Book an Appointment ☎ (646) 917-7441 --- # Testimonials ## Patient Testimonials | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/patient-testimonials/ Summary: Written testimonials from Dr. Andreas Gomoll These letters and notes are from Dr. Gomoll's patients across cartilage repair, ACL reconstruction with allograft, osteochondral allograft transplantation, meniscus transplantation, and high tibial osteotomy (HTO). Many describe returning to running, basketball, hiking, skiing, and competitive sports after years of pain. Cartilage Repair “ Dear Dr. Gomoll, thank you so much for repairing my knee. I am more than thrilled to be back out running, and hiking pain free. Here's a picture of me from this summer on top of Mt. Katahdin, up in Maine. LC, 2 years after osteochondral allograft transplantation In their own words ## What patients are saying Unedited notes sent to Dr. Gomoll by patients after their recovery — color-coded by the procedure they had. Osteotomy “ Thanks Dr. Gomoll. The knee is doing great — I'm running, jumping, and doing 1-leg squats as well as I did when I was 30. No pain during, just some soreness after. GT, 3 years after HTO Osteotomy “ Hello Dr. Gomoll, I was a patient of yours at Brigham and Women's Hospital in 2013/2014, receiving a cartilage transplant and high tibial osteotomy in January 2014. I want to tell you that the surgery changed my life — I've had full range of motion in my knee, I'm very active (I've lost 75 lbs in the past year) and have very little to no discomfort doing any activities. JD, 2 years after fresh osteochondral allograft transplantation and HTO Meniscus “ For the first time in ten years I don't have pain in my knee. AD, 2 months after distal femoral osteotomy and lateral meniscal allograft transplantation Osteotomy “ As always your kindness and patience astounds me. It's a good thing you are so calm and grounded so you can keep me from totally freaking out. DN, 4 months after ACI and tibial tubercle osteotomy ACL Reconstruction “ Last May, you repaired a torn ACL in my right knee using an allograft procedure. I just wanted to report that I have now been able to start playing basketball again, which was one of the primary reasons for having the surgery. I still have some very slight, occasional discomfort in the knee, but absolutely no instability, even on awkward landings during basketball. So thank you and the entire team at Brigham and Women's and the Faulkner. DS, 8 months after ACL reconstruction Meniscus “ You performed a meniscus transplant and knee realignment. Since my surgeries I am doing fantastic. My knee is fully functioning with a range of motion around 130–140 degrees. I am competitively running now. I ran cross country and indoor track for my high school. I plan on running outdoor track this spring as well. Thanks to you I am finally getting back to how I used to be before I hurt my knee. KN, 18 months after meniscus transplantation and distal femoral osteotomy Osteotomy “ I just wanted to say thank you for all you have done for me. I am sure I have said it to you in person, but I just wanted you to know that I thank God that I found a doctor that could help me with my knee. It is hard to find a good doctor in these days and times. I just want you to know by one of your patients that you are truly appreciated for what you do and the care that you give. DB, 6 months after ACI and tibial tubercle osteotomy Cartilage Repair “ Happy new year to you! Thank you for the best Christmas present I have ever received! No Pain!!!!! SL, 2 months after ACI Non-Surgical Care “ I want to thank you again for the time you spent with me. I really felt as though you have a heart and never felt that you were trying to sell me a surgery. Best regards, J. JM, non-operative treatment for knee arthritis Cartilage Repair “ The upside of my bad knee is that I had the opportunity to meet you. Your expertise is unparalleled and your patient care is above anything that "thank you" would cover. I cannot tell you how much I appreciate all you have done. KP, 2 months after osteochondral allograft transplantation Cartilage Repair “ Working with you all has really been an eye opener for how healthcare should work. MS, pre-op for ACI Osteotomy “ 3 lift tickets at Okemo Mountain — $177. Two hot chocolates and an ice-cold beer at the Summit Lodge — $12.85. Five hours on the slopes with my two favorite boys and my new, virtually pain-free knee — PRICELESS! Mission accomplished — skied 5 hours (with many breaks) on Monday. Stayed home Tuesday just to make sure there wasn't any pain or swelling, and guess what — none! Going back for more tomorrow! Can't thank you enough! DN, 12 months after ACI and tibial tubercle osteotomy Osteotomy “ Patient JC crossing the finish line of the 2015 Boston Marathon, 18 months after high tibial osteotomy surgery with Dr. Gomoll. JC, 18 months after HTO From the mailbox ## Notes & letters from patients Scanned thank-you notes Dr. Gomoll has received over the years. AL, treated for persistent patellar instability after prior surgery HM, 18 months after double osteochondral allograft transplantation More stories ## See more patient stories - Video testimonials — patients sharing their stories on camera - In the news — patients featured in CBS, ABC, and ESPN coverage of Dr. Gomoll's work - Cartilage repair procedures — the techniques behind these outcomes ## Could you be the next success story? Most of these patients started exactly where you are — researching options for a painful knee. Schedule a Consultation Call 646-917-7441 --- # Blog ## Rethinking Post-Operative Pain Management: A Multimodal Approach — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/2/17/rethinking-post-operative-pain-management-a-multimodal-approach/ Summary: One of the most frequent concerns that comes up during surgical planning — particularly when we discuss the post-operative period — is pain management. One of the most frequent concerns that comes up during surgical planning—particularly when we discuss the post-operative period—is pain management. Patients are understandably worried about pain medications, especially narcotics. This is a very valid concern. Over the years, I have adjusted my post-operative recommendations with one primary goal in mind: minimizing the use of narcotics while still keeping patients comfortable and allowing them to recover effectively. To accomplish this, I use what is called a multimodal pain management regimen. This means we rely on multiple strategies—both physical measures and medications—rather than depending heavily on a single drug. ### Swelling Control: The Foundation of Pain Control Pain control actually begins before we even talk about medications. One of the most important post-operative strategies—especially for lower extremity procedures—is elevation. Swelling creates pain. It also slows down rehabilitation because it interferes with joint motion and can even temporarily shut down muscle activation. Anything we can do to minimize swelling helps reduce pain and accelerates recovery. Another critical component is icing. In the past, patients commonly used ice packs directly from the freezer. However, these can be quite dangerous. They are extremely cold and should never be placed directly on the skin. They must be removed after about 20 minutes to allow the skin to recover. It is especially important never to fall asleep with a traditional ice pack on the skin, as frostbite can occur. For these reasons, I now frequently recommend specialized cold-therapy devices. The two machines I most commonly use are Game Ready and NICE. The latest versions of these machines do not require traditional ice. They function almost like a small refrigerator, cooling water internally and circulating it through a wrap. Because the temperature is controlled and not as extreme as freezer ice, the risk of skin injury or frostbite is significantly reduced. In addition to cold therapy, these machines can also provide compression. I typically recommend starting compression a few days after surgery, once the incisional pain has begun to settle. When introduced at the right time, compression can be extremely helpful in controlling swelling. Reduced swelling not only improves comfort but also supports better motion and muscle activation during rehabilitation. Many of these devices also have built-in programs that automatically cycle on and off every 20–30 minutes. As long as they are used appropriately, patients can safely run them for extended periods—even hours at a time—which I have found to be extremely helpful for managing both pain and swelling. ### Multimodal Medication Strategy In addition to physical measures such as elevation and icing, I use a multimodal medication approach. One helpful strategy is to use several different medications at appropriate doses rather than relying on a high dose of a single medication. At first, this can feel overwhelming because it may involve taking multiple pills. However, this approach allows us to target pain through different mechanisms while minimizing side effects. For example: - Acetaminophen (Tylenol) is tried and true. On its own, it is not particularly strong, but it has very few side effects—provided patients are careful not to exceed the maximum daily dose. - I often prescribe an anti-inflammatory medication. Frequently, I use Celecoxib, which is a selective anti-inflammatory that does not significantly interfere with bleeding—an important consideration in the post-operative setting. - I may also prescribe Gabapentin. Originally developed for neurological conditions, it has been found to help with nerve-related pain and can reduce the overall need for narcotics. - There is also a newer, non-narcotic pain medication that was recently FDA-approved called Journavx. We have started incorporating this into our pain protocols as well, although some insurance companies do not yet cover it. - ### Narcotics: Reserved as a Last Resort For more painful procedures, I still prescribe Oxycodone, but in small quantities. I view narcotics as a medication of last resort, intended primarily for the first few days after surgery if pain is not adequately controlled by the other components of the regimen. The goal is not to eliminate pain entirely—that is often unrealistic—but to make it manageable while minimizing risks and side effects. Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## Lindsey Vonn competes with a torn ACL. Why that may work for some. — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/2/6/lindsey-vonn-competes-with-a-torn-acl-why-that-may-work-for-some/ Summary: Anyone with even the faintest interest in winter sports has likely heard about Lindsey Vonn’s ACL injury. What’s remarkable is that she has said she’ll keep competing. Anyone with even the faintest interest in winter sports has likely heard about Lindsey Vonn’s ACL injury. What’s remarkable is that she has said she’ll attempt to compete in the Olympics with a torn ACL. That often surprises people — I hear from friends and patients all the time — because the common assumption is that if you tear your ACL, reconstruction is mandatory. She’s a very special case. So let’s talk more generally, about typical patients. It’s not necessarily true that you must have your ACL reconstructed. The primary reason we consider ACL reconstruction is to restore stability to the knee — and stability matters for several reasons. In the short term, most people simply don’t like the uncertainty of an unstable knee. Pivoting or twisting activities — soccer, tennis, pickleball — or even everyday situations like navigating a crowded sidewalk and changing direction quickly can lead to buckling. That unpredictability affects quality of life and confidence, and reconstruction can allow people to return to the sports and activities that are part of their social and physical routine. There’s also a joint-preservation aspect. An unstable knee that buckles repeatedly places the meniscus at risk. I often compare it to jumping a curb with your car — each impact increases the chance of damaging the tire. Similarly, each episode of knee instability increases the risk of meniscal injury or further damage. And meniscal health plays a major role in the long-term development of arthritis. If your meniscus is intact, preserving it is valuable — and you’re more likely to preserve it with a stable knee. On the other hand, if you don’t participate in higher-risk activities — perhaps you prefer cycling or other low-impact exercise — and especially if you’re older or have a partial tear, non-operative treatment may be reasonable to consider. But if you’re younger, want to return to cutting or pivoting sports, and your meniscus is still intact at the time of injury, my general recommendation is to restore as much stability to the knee as possible — both for current function and long-term joint health. Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## Lindsey Vonn races with an artificial knee. So why bother keeping your own? — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/2/6/lindsey-vonn-races-with-an-artificial-knee-so-why-bother-keeping-your-own/ Summary: Here’s another (at least vaguely) ski-injury–related topic. By now, most people know that Lindsey Vonn tore her ACL — but that’s not really what I want to focus on. Here’s another (at least vaguely) ski-injury–related topic. By now, most people know that Lindsey Vonn tore her ACL — but that’s not really what I want to focus on. What her story reminds me of is that she’s a great example for discussing joint preservation versus joint replacement. A few years ago, she underwent a partial knee replacement, and it clearly worked remarkably well — she even returned to Olympic competition. That’s essentially unprecedented. So that raises a question: Why don’t we always replace knees? Why do we bother with cartilage transplants, meniscus transplants, or osteotomies, which often involve a more demanding recovery? The reason is that a mechanical solution like a joint replacement limits future options. If you’ve had a replacement, I can usually predict your next surgery — it will be another replacement, typically a larger or more complex one. You move from partial to total, from total to revision total. And revision surgeries generally don’t perform as well as primary replacements. Each step tends to become more complicated, and outcomes may decline over time. If you begin this process in your 50s or 60s, that progression is often acceptable. For example, you might start with a partial replacement, keep it into your mid-60s, then transition to a total replacement and do well long-term. But if you start in your 20s, you could face three or four revision surgeries over your lifetime — and that’s far less ideal. That’s where joint preservation comes in. These procedures act as a bridge. I can’t promise that an osteotomy or cartilage procedure in your 20s means you’ll never need further surgery — in fact, you probably will. And you may ultimately require a knee replacement. But the goal is to delay that step. You start the replacement “clock” later in life, when the number of revisions needed is likely smaller. Another advantage of joint preservation is flexibility. Unlike replacement, it doesn’t burn bridges or limit future choices. Your next step could be anything — an injection, a biologic therapy, a medication, or perhaps a next-generation replacement that’s significantly improved compared to what’s available today. Even delaying replacement by 10–15 years means benefiting from advances in implant design and surgical technique. That’s the value of joint preservation: managing symptoms, maintaining activity, and buying time — allowing you to take advantage of future innovations while postponing irreversible mechanical solutions. Thanks very much. Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## Why "It Depends" may be the best thing to hear from a surgeon. — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/3/10/why-it-depends-may-be-the-best-thing-to-hear-from-a-surgeon/ Summary: Today I want to talk a little bit about treatment options. Sometimes the best answer you can get from a physician — or from a surgeon, in my case — is "it depends." Today I want to talk a little bit about treatment options. Sometimes the best answer you can get from a physician—or from a surgeon, in my case—is actually, “it depends.” And why is that? Because it means there are multiple possible options. If there were only one option, you would simply be presented with that single solution. But most conditions, especially in orthopaedics, allow for several different approaches. I see many patients who come to me for a second opinion. Often they have seen another surgeon who gave them just one answer. For example, someone may come in with knee arthritis and say, “The other surgeon told me I need a knee replacement.” Or they were told, “You will need a knee replacement eventually, but you’re not ready yet—so just wait until you’re older and the pain becomes unbearable.” In many situations, my answer is different. My answer is usually, it depends. That’s because the right treatment depends on several factors: how much pain you have, how much damage is present in the knee, and exactly where that damage is located. If someone truly has severe arthritis throughout the entire knee—what we call “bone-on-bone” arthritis everywhere—then a total knee replacement may indeed be the best solution if the pain is significant enough. But if the pain is manageable, there are still many non-surgical options we can try first. These might include injections such as hyaluronic acid, PRP, or occasionally cortisone for flare-ups. Physical therapy, bracing, and oral supplements like turmeric, glucosamine, vitamin E, or fish oil can sometimes help as well. Even medications like Advil or Aleve may provide relief. But many patients I see don’t actually have bone-on-bone arthritis everywhere. Sometimes the arthritis is limited to just one part of the knee—for example, the medial compartment, which is the inside part of the joint. In those cases, the answer shouldn’t automatically be a total knee replacement. Instead, the treatment options may range from doing very little to considering several different interventions. If symptoms are mild, sometimes the best approach is simply to listen to your body and continue your normal activities without aggressive treatment. If symptoms are more bothersome, we might consider supplements or medications, injections, or supportive treatments such as a medial unloading brace. And sometimes surgery becomes an option—but even then, there are several possibilities depending on the specific situation. In certain cases, we may consider cartilage repair if the problem is more of a focal cartilage defect. In other cases, especially if someone is bow-legged and placing excessive pressure on the inside of the knee, a procedure called a high tibial osteotomy may be appropriate to realign the leg and unload that compartment. There are also newer technologies such as the MISHA implant—an implanted shock absorber designed to reduce pressure in the medial compartment of the knee. And in some patients, a partial knee replacement—also called a unicompartmental knee replacement—may be the best surgical solution if the arthritis is limited to just one area. So as you can see, there are many possible approaches. The right one depends on your individual situation—how much pain you have, how much damage is present, and what your goals are. To determine that, we rely on good imaging studies such as X-rays, alignment views, and MRI scans, along with a careful physical examination. Then we can sit down together, review the findings, and decide which treatment option—or options—make the most sense for you. Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 3, 2026Do I need surgery for my unstable patella? ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## Do I need surgery for my unstable patella? — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/3/3/do-i-need-surgery-for-my-unstable-patella/ Summary: One of the most common and most important questions my patients ask when they come in with patellar instability is: Do I need surgery, or can I manage this without it? One of the most common and most important questions my patients ask when they come in with patellar instability is: Do I need surgery, or can I manage this without it? In a recent issue of the American Journal of Sports Medicine (AJSM), a high-quality systematic review and meta-analysis directly addressed this question. (Article Link) The senior author was Justin Mistovich from University Hospitals in Cleveland. The authors analyzed randomized controlled trials comparing three treatment approaches: - Non-operative treatment - MPFL repair (an older surgical technique) - MPFL reconstruction (the modern surgical standard) The differences were striking. - Non-operative treatment had a recurrent dislocation rate of a little over 30%. - MPFL repair reduced that risk to about 15%. - MPFL reconstruction lowered the recurrence rate to just 4%. In other words, modern MPFL reconstruction reduces the risk of another dislocation from roughly one in three down to about one in twenty-five. That difference matters. I have seen many patients who experienced several dislocations without major cartilage injury—until one particularly severe, unpredictable event caused significant cartilage damage. Once that happens, long-term outcomes can change dramatically. Because of this, I now emphasize two key principles in my practice. First, I carefully evaluate each patient’s anatomic risk factors—such as patella alta, trochlear dysplasia, an elevated TT–TG distance, age, and other structural features—to estimate how likely recurrence is. Second, we use that information for shared decision-making, weighing the risk of recurrence against the risks and benefits of surgery. Patellar instability should not simply be dismissed with a quick physical therapy prescription and no deeper discussion. The recurrence risk can be substantial, and modern surgical techniques are highly effective when appropriately indicated. The second important question patients often ask—especially after undergoing surgery on one knee—is: If this happened on one side, is it going to happen on the other? Should I consider doing something prophylactically? Another study in the same AJSM issue, led by Chital Parikh at Cincinnati Children’s Hospital Medical Center, examined this exact issue. (Article Link) The authors reviewed all MPFL reconstructions performed at their institution between 2012 and 2022 to determine the likelihood of a contralateral (opposite-side) dislocation. Patellofemoral instability is often related to how someone is built. Structural factors such as: - Patella alta - Trochlear dysplasia - Elevated TT–TG distance - Younger age - Female sex all increase susceptibility to dislocation. The findings were highly informative: - If a patient had none of these anatomic risk factors, the risk of dislocation in the opposite knee was less than 10%. - If a patient had all of these risk factors, the risk rose dramatically—approaching 80%. That is an enormous difference. For families, this data provides clarity. If the risk of the other knee dislocating is close to 80%, a discussion about prophylactic stabilization becomes very reasonable. If the risk is under 10%, surgery on the opposite side is likely unnecessary. Taken together, these two studies reinforce an important message: Patellar instability is not a one-size-fits-all condition. With careful evaluation of individual anatomy and evidence-based discussion of recurrence risk, we can make thoughtful, personalized decisions about whether surgery is appropriate—and when it may prevent significant long-term damage. Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## “Patellar tendon is the gold standard”—or is it? — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/4/6/patellar-tendon-is-the-gold-standardor-is-it/ Summary: I recently saw a 48-year-old in my office who tore his ACL skiing. He is very active, participating in both winter and racket sports, and wants to return to sport. I recently saw a 48-year-old in my office who tore his ACL skiing. He is very active, participating in both winter and racket sports, and wants to return to that level. He had already seen a colleague who told him that he had to undergo a patellar tendon autograft ACL reconstruction because this is the “gold standard.” He came to see me for a second opinion, wanting to discuss whether there were any other options, since none had been offered to him. This is not a unique example. In fact, it happens often enough that I felt it was worth writing about. First off, there is no such thing as a “gold standard” in ACL reconstruction. Like most things in medicine, the choice of graft depends on who you are and what you want to do. Some surgeons, however, seem to forget this, and in their eyes the choice becomes more about what they are comfortable with than what is best for the patient. There is a recent publication (link here) in the American Journal of Sports Medicine from the Swedish Knee Ligament Registry that speaks directly to this issue. What is particularly valuable about these registry studies, especially those from Scandinavia, is that every single surgery is entered and followed. This removes many of the biases related to individual surgeon skill, preference, and belief, and provides a more honest picture of outcomes across an entire population—young and old, active and sedentary. This particular study reported on failure rates in over 44,000 patients who underwent ACL reconstruction using either quadriceps tendon, patellar tendon, or hamstring tendon autografts. A subset of approximately 19,000 of these patients also had patient-reported outcome scores available. These scores reflect how patients perceive their activity level, pain, and overall function in daily life and sports. What was fascinating about this study was that patients who underwent quadriceps or hamstring tendon grafts were more likely to achieve an outcome that they considered satisfactory compared to those who had a patellar tendon graft—the so-called “gold standard.” At the same time, there were no meaningful differences in failure rates between the three graft types, all of which were below 3%. If there is little to no difference in failure rates, then the logical next step is to choose the graft that causes the least long-term problems. A study from Hospital for Special Surgery (link here) that analyzed 21 randomized controlled trials with more than 1700 patients comparing the same graft types found a 69% lower chance of donor-site morbidity—meaning problems related to where the graft is taken from—with hamstring or quadriceps grafts compared to patellar tendon autografts. Another study (link here) showed that persistent and severe kneeling pain was three times more likely with patellar tendon grafts than with hamstring grafts. Yet another analysis of 12 randomized controlled trials (link here) involving more than 1,400 patients demonstrated that while there were no differences in stability or graft failure, there were significant differences in anterior knee pain, kneeling pain, and the development of osteoarthritis, all of which were higher in patients who had patellar tendon grafts. So while there may be differences in certain subgroups, particularly in very young patients, for my 48-year-old patient there are no meaningful differences in failure rates between graft types. Given that, I recommended choosing the option with the lowest risk of long-term problems, which in his case was a hamstring autograft. And as for those very young patients, even there the story is not so simple. A study comparing patellar tendon reconstruction to the technique I prefer for these patients - hamstring autograft combined with a lateral extra-articular tenodesis - showed that the patellar tendon group had a fourfold higher failure rate. I try to find the right balance between risk and reward for each individual patient, and that balance depends on who you are and what you want to return to. For that reason, I do not think I have ever used the term “gold standard.” Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - August 18, 2026ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. - March 3, 2026Do I need surgery for my unstable patella? ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- ## ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/2026/8/18/acl-reconstruction-it-may-be-time-to-stop-arguing-about-the-best-graft/ Summary: In a noteworthy new study published in the Orthopaedic Journal of Sports Medicine, investigators from high-volume sports medicine centers in South America evaluated ACL reconstruction outcomes in a large cohort of competitive and professional soccer and rugby players—an especially high-risk population in which graft failure can have major consequences for an athlete’s career. In a noteworthy new study published in the Orthopaedic Journal of Sports Medicine, investigators from high-volume sports medicine centers in South America evaluated ACL reconstruction outcomes in a large cohort of competitive and professional soccer and rugby players—an especially high-risk population in which graft failure can have major consequences for an athlete’s career. The investigators compared two commonly used ACL grafts: hamstring tendon and bone–patellar tendon–bone autografts. More importantly, they examined what happened when a lateral extra-articular tenodesis (LET) was added to the ACL reconstruction. The most striking finding was that graft choice appeared to matter far less than whether an LET was performed. In the adjusted analysis, hamstring versus patellar tendon graft was not a significant predictor of graft failure. In contrast, adding an LET was associated with an approximately 85% reduction in the risk of ACL graft failure. The absolute numbers were impressive. At five years, the reported graft failure rates were only 0.8% for patellar tendon ACL reconstruction with LET and 0.9% for hamstring ACL reconstruction with LET, compared with 5.5% for isolated patellar tendon reconstruction and 8.2% for isolated hamstring reconstruction. The authors therefore concluded that the addition of the LET appeared to be the dominant factor associated with improved graft survival, while the choice between hamstring and patellar tendon grafts was considerably less important. This is something I have incorporated into my own practice for approximately the past decade. In patients at particularly high risk of ACL reconstruction failure, I strongly consider adding an LET at the time of surgery. Who are these patients? They include very young athletes, patients involved in cutting and pivoting sports such as soccer and basketball, high-level or professional athletes, and patients undergoing revision surgery after a previous ACL reconstruction has failed. The broader message is an important one and is consistent with the direction ACL surgery has been moving. It is time to move past the endless debate over which ACL graft is “the best.” What matters is matching the operation to the individual patient and their risk profile. For me, that means less fixation on graft choice and more attention to the patient in front of me. In a high-risk athlete—young, returning to a cutting or pivoting sport, competing at a high level, or recovering from a previous ACL failure—an LET can be an important part of giving the reconstructed ACL its best chance to withstand the demands of sport. ### Reference Rivarola H, Chahla J, Ramos P, et al. Association of Lateral Extra-Articular Tenodesis With Graft Failure and Return to Sport in Pivoting Athletes: A Multicenter Comparative Study of Augmented and Isolated ACL Reconstructions. Orthop J Sports Med. 2026;14(8):23259671261449998. doi:10.1177/23259671261449998. PMID: 42553396. PubMed · DOI Written by Dr. Andreas H. Gomoll, MD Orthopedic surgeon — knee & shoulder, Hospital for Special Surgery. Professor of Orthopedic Surgery, Weill Cornell. About Dr. Gomoll → Considering treatment? Discuss your knee or shoulder with Dr. Gomoll. Make an Appointment Call 646-917-7441 More articles - April 6, 2026“Patellar tendon is the gold standard”—or is it? - March 10, 2026Why "It Depends" may be the best thing to hear from a surgeon. - March 3, 2026Do I need surgery for my unstable patella? ## Have a question about your knee or shoulder? Dr. Gomoll sees patients at the Hospital for Special Surgery in New York City. Make an Appointment Call 646-917-7441 --- # Other Pages ## Blog | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/ Summary: Insights on joint preservation, cartilage repair, ACL and patellar surgery, and post-operative recovery from Dr. Andreas Gomoll — orthopedic surgeon at the Hospital for Special Surgery. Dr. Gomoll writes about the decisions behind orthopedic surgery — when an ACL tear needs reconstruction, how to choose a graft, whether an unstable patella needs surgery, and how modern multimodal pain management works. He covers the full spectrum of joint preservation, from cartilage repair and meniscal procedures to arthritis surgery. Each article is written from his own clinical perspective at the Hospital for Special Surgery. Latest articles ## From Dr. Gomoll August 18, 2026 ### ACL Reconstruction: It May Be Time to Stop Arguing About the “Best” Graft In a noteworthy new study published in the Orthopaedic Journal of Sports Medicine, investigators from high-volume sports medicine centers in South America evaluated ACL reconstruction outcomes in a large cohort of competitive and professional soccer and rugby players—an especially high-risk population in which graft failure can have major consequences for an athlete’s career. Read article → August 12, 2026Podcast — Great Minds of Today ### Can You Avoid Knee Replacement? Cartilage Repair & Joint Preservation Dr. Gomoll joins the Great Minds of Today podcast for a 48-minute conversation on cartilage preservation — why stem-cell therapy does not yet regrow cartilage, which stem-cell sources are legally used in U.S. orthopedics, and who is genuinely a candidate for joint preservation instead of a total knee replacement. Listen to the episode → April 6, 2026 ### “Patellar tendon is the gold standard” — or is it? I recently saw a 48-year-old in my office who tore his ACL skiing. He is very active, participating in both winter and racket sports, and wants to return to sport. Read article → March 10, 2026 ### Why “It Depends” may be the best thing to hear from a surgeon Today I want to talk a little bit about treatment options. Sometimes the best answer you can get from a physician — or from a surgeon, in my case — is "it depends." Read article → March 3, 2026 ### Do I need surgery for my unstable patella? One of the most common and most important questions my patients ask when they come in with patellar instability is: Do I need surgery, or can I manage this without it? Read article → February 17, 2026 ### Rethinking Post-Operative Pain Management: A Multimodal Approach One of the most frequent concerns that comes up during surgical planning — particularly when we discuss the post-operative period — is pain management. Read article → February 6, 2026 ### Lindsey Vonn competes with a torn ACL. Why that may work for some. Anyone with even the faintest interest in winter sports has likely heard about Lindsey Vonn’s ACL injury. What’s remarkable is that she has said she’ll keep competing. Read article → February 6, 2026 ### Lindsey Vonn races with an artificial knee. So why bother keeping your own? Here’s another (at least vaguely) ski-injury–related topic. By now, most people know that Lindsey Vonn tore her ACL — but that’s not really what I want to focus on. Read article → ## Have a question about your knee or shoulder? Schedule a consultation with Dr. Gomoll to discuss your options. Make an Appointment Call 646-917-7441 --- ## cold therapy — Blog — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/tag/cold+therapy/ cold therapy One of the most frequent concerns that comes up during surgical planning—particularly when we discuss the post-operative period—is pain management. Patients are understandably worried about pain medications, especially narcotics. This is a very valid concern. Over the years, I have adjusted my post-operative recommendations with one primary goal in mind: minimizing the use of narcotics while still keeping patients comfortable and allowing them to recover effectively. To accomplish this, I use what is called a multimodal pain management regimen. This means we rely on multiple strategies—both physical measures and medications—rather than depending heavily on a single drug. ### Swelling Control: The Foundation of Pain Control Pain control actually begins before we even talk about medications. One of the most important post-operative strategies—especially for lower extremity procedures—is elevation. Swelling creates pain. It also slows down rehabilitation because it interferes with joint motion and can even temporarily shut down muscle activation. Anything we can do to minimize swelling helps reduce pain and accelerates recovery. Another critical component is icing. In the past, patients commonly used ice packs directly from the freezer. However, these can be quite dangerous. They are extremely cold and should never be placed directly on the skin. They must be removed after about 20 minutes to allow the skin to recover. It is especially important never to fall asleep with a traditional ice pack on the skin, as frostbite can occur. For these reasons, I now frequently recommend specialized cold-therapy devices. The two machines I most commonly use are Game Ready and NICE. The latest versions of these machines do not require traditional ice. They function almost like a small refrigerator, cooling water internally and circulating it through a wrap. Because the temperature is controlled and not as extreme as freezer ice, the risk of skin injury or frostbite is significantly reduced. In addition to cold therapy, these machines can also provide compression. I typically recommend starting compression a few days after surgery, once the incisional pain has begun to settle. When introduced at the right time, compression can be extremely helpful in controlling swelling. Reduced swelling not only improves comfort but also supports better motion and muscle activation during rehabilitation. Many of these devices also have built-in programs that automatically cycle on and off every 20–30 minutes. As long as they are used appropriately, patients can safely run them for extended periods—even hours at a time—which I have found to be extremely helpful for managing both pain and swelling. ### Multimodal Medication Strategy In addition to physical measures such as elevation and icing, I use a multimodal medication approach. One helpful strategy is to use several different medications at appropriate doses rather than relying on a high dose of a single medication. At first, this can feel overwhelming because it may involve taking multiple pills. However, this approach allows us to target pain through different mechanisms while minimizing side effects. For example: - Acetaminophen (Tylenol) is tried and true. On its own, it is not particularly strong, but it has very few side effects—provided patients are careful not to exceed the maximum daily dose. - I often prescribe an anti-inflammatory medication. Frequently, I use Celecoxib, which is a selective anti-inflammatory that does not significantly interfere with bleeding—an important consideration in the post-operative setting. - I may also prescribe Gabapentin. Originally developed for neurological conditions, it has been found to help with nerve-related pain and can reduce the overall need for narcotics. - There is also a newer, non-narcotic pain medication that was recently FDA-approved called Journavx. We have started incorporating this into our pain protocols as well, although some insurance companies do not yet cover it. - ### Narcotics: Reserved as a Last Resort For more painful procedures, I still prescribe Oxycodone, but in small quantities. I view narcotics as a medication of last resort, intended primarily for the first few days after surgery if pain is not adequately controlled by the other components of the regimen. The goal is not to eliminate pain entirely—that is often unrealistic—but to make it manageable while minimizing risks and side effects. --- ## MPFL reconstruction — Blog — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/tag/MPFL+reconstruction/ MPFL reconstruction One of the most common and most important questions my patients ask when they come in with patellar instability is: Do I need surgery, or can I manage this without it? In a recent issue of the American Journal of Sports Medicine (AJSM), a high-quality systematic review and meta-analysis directly addressed this question. (Article Link) The senior author was Justin Mistovich from University Hospitals in Cleveland. The authors analyzed randomized controlled trials comparing three treatment approaches: - Non-operative treatment - MPFL repair (an older surgical technique) - MPFL reconstruction (the modern surgical standard) The differences were striking. - Non-operative treatment had a recurrent dislocation rate of a little over 30%. - MPFL repair reduced that risk to about 15%. - MPFL reconstruction lowered the recurrence rate to just 4%. In other words, modern MPFL reconstruction reduces the risk of another dislocation from roughly one in three down to about one in twenty-five. That difference matters. I have seen many patients who experienced several dislocations without major cartilage injury—until one particularly severe, unpredictable event caused significant cartilage damage. Once that happens, long-term outcomes can change dramatically. Because of this, I now emphasize two key principles in my practice. First, I carefully evaluate each patient’s anatomic risk factors—such as patella alta, trochlear dysplasia, an elevated TT–TG distance, age, and other structural features—to estimate how likely recurrence is. Second, we use that information for shared decision-making, weighing the risk of recurrence against the risks and benefits of surgery. Patellar instability should not simply be dismissed with a quick physical therapy prescription and no deeper discussion. The recurrence risk can be substantial, and modern surgical techniques are highly effective when appropriately indicated. The second important question patients often ask—especially after undergoing surgery on one knee—is: If this happened on one side, is it going to happen on the other? Should I consider doing something prophylactically? Another study in the same AJSM issue, led by Chital Parikh at Cincinnati Children’s Hospital Medical Center, examined this exact issue. (Article Link) The authors reviewed all MPFL reconstructions performed at their institution between 2012 and 2022 to determine the likelihood of a contralateral (opposite-side) dislocation. Patellofemoral instability is often related to how someone is built. Structural factors such as: - Patella alta - Trochlear dysplasia - Elevated TT–TG distance - Younger age - Female sex all increase susceptibility to dislocation. The findings were highly informative: - If a patient had none of these anatomic risk factors, the risk of dislocation in the opposite knee was less than 10%. - If a patient had all of these risk factors, the risk rose dramatically—approaching 80%. That is an enormous difference. For families, this data provides clarity. If the risk of the other knee dislocating is close to 80%, a discussion about prophylactic stabilization becomes very reasonable. If the risk is under 10%, surgery on the opposite side is likely unnecessary. Taken together, these two studies reinforce an important message: Patellar instability is not a one-size-fits-all condition. With careful evaluation of individual anatomy and evidence-based discussion of recurrence risk, we can make thoughtful, personalized decisions about whether surgery is appropriate—and when it may prevent significant long-term damage. --- ## pain management — Blog — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/tag/pain+management/ pain management One of the most frequent concerns that comes up during surgical planning—particularly when we discuss the post-operative period—is pain management. Patients are understandably worried about pain medications, especially narcotics. This is a very valid concern. Over the years, I have adjusted my post-operative recommendations with one primary goal in mind: minimizing the use of narcotics while still keeping patients comfortable and allowing them to recover effectively. To accomplish this, I use what is called a multimodal pain management regimen. This means we rely on multiple strategies—both physical measures and medications—rather than depending heavily on a single drug. ### Swelling Control: The Foundation of Pain Control Pain control actually begins before we even talk about medications. One of the most important post-operative strategies—especially for lower extremity procedures—is elevation. Swelling creates pain. It also slows down rehabilitation because it interferes with joint motion and can even temporarily shut down muscle activation. Anything we can do to minimize swelling helps reduce pain and accelerates recovery. Another critical component is icing. In the past, patients commonly used ice packs directly from the freezer. However, these can be quite dangerous. They are extremely cold and should never be placed directly on the skin. They must be removed after about 20 minutes to allow the skin to recover. It is especially important never to fall asleep with a traditional ice pack on the skin, as frostbite can occur. For these reasons, I now frequently recommend specialized cold-therapy devices. The two machines I most commonly use are Game Ready and NICE. The latest versions of these machines do not require traditional ice. They function almost like a small refrigerator, cooling water internally and circulating it through a wrap. Because the temperature is controlled and not as extreme as freezer ice, the risk of skin injury or frostbite is significantly reduced. In addition to cold therapy, these machines can also provide compression. I typically recommend starting compression a few days after surgery, once the incisional pain has begun to settle. When introduced at the right time, compression can be extremely helpful in controlling swelling. Reduced swelling not only improves comfort but also supports better motion and muscle activation during rehabilitation. Many of these devices also have built-in programs that automatically cycle on and off every 20–30 minutes. As long as they are used appropriately, patients can safely run them for extended periods—even hours at a time—which I have found to be extremely helpful for managing both pain and swelling. ### Multimodal Medication Strategy In addition to physical measures such as elevation and icing, I use a multimodal medication approach. One helpful strategy is to use several different medications at appropriate doses rather than relying on a high dose of a single medication. At first, this can feel overwhelming because it may involve taking multiple pills. However, this approach allows us to target pain through different mechanisms while minimizing side effects. For example: - Acetaminophen (Tylenol) is tried and true. On its own, it is not particularly strong, but it has very few side effects—provided patients are careful not to exceed the maximum daily dose. - I often prescribe an anti-inflammatory medication. Frequently, I use Celecoxib, which is a selective anti-inflammatory that does not significantly interfere with bleeding—an important consideration in the post-operative setting. - I may also prescribe Gabapentin. Originally developed for neurological conditions, it has been found to help with nerve-related pain and can reduce the overall need for narcotics. - There is also a newer, non-narcotic pain medication that was recently FDA-approved called Journavx. We have started incorporating this into our pain protocols as well, although some insurance companies do not yet cover it. - ### Narcotics: Reserved as a Last Resort For more painful procedures, I still prescribe Oxycodone, but in small quantities. I view narcotics as a medication of last resort, intended primarily for the first few days after surgery if pain is not adequately controlled by the other components of the regimen. The goal is not to eliminate pain entirely—that is often unrealistic—but to make it manageable while minimizing risks and side effects. --- ## patellar instability — Blog — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/tag/patellar+instability/ patellar instability One of the most common and most important questions my patients ask when they come in with patellar instability is: Do I need surgery, or can I manage this without it? In a recent issue of the American Journal of Sports Medicine (AJSM), a high-quality systematic review and meta-analysis directly addressed this question. (Article Link) The senior author was Justin Mistovich from University Hospitals in Cleveland. The authors analyzed randomized controlled trials comparing three treatment approaches: - Non-operative treatment - MPFL repair (an older surgical technique) - MPFL reconstruction (the modern surgical standard) The differences were striking. - Non-operative treatment had a recurrent dislocation rate of a little over 30%. - MPFL repair reduced that risk to about 15%. - MPFL reconstruction lowered the recurrence rate to just 4%. In other words, modern MPFL reconstruction reduces the risk of another dislocation from roughly one in three down to about one in twenty-five. That difference matters. I have seen many patients who experienced several dislocations without major cartilage injury—until one particularly severe, unpredictable event caused significant cartilage damage. Once that happens, long-term outcomes can change dramatically. Because of this, I now emphasize two key principles in my practice. First, I carefully evaluate each patient’s anatomic risk factors—such as patella alta, trochlear dysplasia, an elevated TT–TG distance, age, and other structural features—to estimate how likely recurrence is. Second, we use that information for shared decision-making, weighing the risk of recurrence against the risks and benefits of surgery. Patellar instability should not simply be dismissed with a quick physical therapy prescription and no deeper discussion. The recurrence risk can be substantial, and modern surgical techniques are highly effective when appropriately indicated. The second important question patients often ask—especially after undergoing surgery on one knee—is: If this happened on one side, is it going to happen on the other? Should I consider doing something prophylactically? Another study in the same AJSM issue, led by Chital Parikh at Cincinnati Children’s Hospital Medical Center, examined this exact issue. (Article Link) The authors reviewed all MPFL reconstructions performed at their institution between 2012 and 2022 to determine the likelihood of a contralateral (opposite-side) dislocation. Patellofemoral instability is often related to how someone is built. Structural factors such as: - Patella alta - Trochlear dysplasia - Elevated TT–TG distance - Younger age - Female sex all increase susceptibility to dislocation. The findings were highly informative: - If a patient had none of these anatomic risk factors, the risk of dislocation in the opposite knee was less than 10%. - If a patient had all of these risk factors, the risk rose dramatically—approaching 80%. That is an enormous difference. For families, this data provides clarity. If the risk of the other knee dislocating is close to 80%, a discussion about prophylactic stabilization becomes very reasonable. If the risk is under 10%, surgery on the opposite side is likely unnecessary. Taken together, these two studies reinforce an important message: Patellar instability is not a one-size-fits-all condition. With careful evaluation of individual anatomy and evidence-based discussion of recurrence risk, we can make thoughtful, personalized decisions about whether surgery is appropriate—and when it may prevent significant long-term damage. --- ## post-op recovery — Blog — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/blog/tag/post-op+recovery/ post-op recovery One of the most frequent concerns that comes up during surgical planning—particularly when we discuss the post-operative period—is pain management. Patients are understandably worried about pain medications, especially narcotics. This is a very valid concern. Over the years, I have adjusted my post-operative recommendations with one primary goal in mind: minimizing the use of narcotics while still keeping patients comfortable and allowing them to recover effectively. To accomplish this, I use what is called a multimodal pain management regimen. This means we rely on multiple strategies—both physical measures and medications—rather than depending heavily on a single drug. ### Swelling Control: The Foundation of Pain Control Pain control actually begins before we even talk about medications. One of the most important post-operative strategies—especially for lower extremity procedures—is elevation. Swelling creates pain. It also slows down rehabilitation because it interferes with joint motion and can even temporarily shut down muscle activation. Anything we can do to minimize swelling helps reduce pain and accelerates recovery. Another critical component is icing. In the past, patients commonly used ice packs directly from the freezer. However, these can be quite dangerous. They are extremely cold and should never be placed directly on the skin. They must be removed after about 20 minutes to allow the skin to recover. It is especially important never to fall asleep with a traditional ice pack on the skin, as frostbite can occur. For these reasons, I now frequently recommend specialized cold-therapy devices. The two machines I most commonly use are Game Ready and NICE. The latest versions of these machines do not require traditional ice. They function almost like a small refrigerator, cooling water internally and circulating it through a wrap. Because the temperature is controlled and not as extreme as freezer ice, the risk of skin injury or frostbite is significantly reduced. In addition to cold therapy, these machines can also provide compression. I typically recommend starting compression a few days after surgery, once the incisional pain has begun to settle. When introduced at the right time, compression can be extremely helpful in controlling swelling. Reduced swelling not only improves comfort but also supports better motion and muscle activation during rehabilitation. Many of these devices also have built-in programs that automatically cycle on and off every 20–30 minutes. As long as they are used appropriately, patients can safely run them for extended periods—even hours at a time—which I have found to be extremely helpful for managing both pain and swelling. ### Multimodal Medication Strategy In addition to physical measures such as elevation and icing, I use a multimodal medication approach. One helpful strategy is to use several different medications at appropriate doses rather than relying on a high dose of a single medication. At first, this can feel overwhelming because it may involve taking multiple pills. However, this approach allows us to target pain through different mechanisms while minimizing side effects. For example: - Acetaminophen (Tylenol) is tried and true. On its own, it is not particularly strong, but it has very few side effects—provided patients are careful not to exceed the maximum daily dose. - I often prescribe an anti-inflammatory medication. Frequently, I use Celecoxib, which is a selective anti-inflammatory that does not significantly interfere with bleeding—an important consideration in the post-operative setting. - I may also prescribe Gabapentin. Originally developed for neurological conditions, it has been found to help with nerve-related pain and can reduce the overall need for narcotics. - There is also a newer, non-narcotic pain medication that was recently FDA-approved called Journavx. We have started incorporating this into our pain protocols as well, although some insurance companies do not yet cover it. - ### Narcotics: Reserved as a Last Resort For more painful procedures, I still prescribe Oxycodone, but in small quantities. I view narcotics as a medication of last resort, intended primarily for the first few days after surgery if pain is not adequately controlled by the other components of the regimen. The goal is not to eliminate pain entirely—that is often unrealistic—but to make it manageable while minimizing risks and side effects. --- ## Documented Case Studies | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/cases/ Summary: Real cartilage repair cases performed by Dr. Andreas Gomoll — subchondral drilling and umbilical cord blood mesenchymal stem-cell implantation in the medial femoral condyle. Below are documented intra-operative cartilage-repair cases from Dr. Gomoll's practice. Each shows the defect appearance, the technique used (subchondral drilling or umbilical cord MSC implantation), and the rationale for that choice. For more patient-side outcomes, see success stories and patient testimonials. ## Cartilage repair cases Case Study ### Cartilage defect after subchondral drilling Cartilage defect in the medial femoral condyle after preparation and marrow stimulation with multiple drill holes. This intra-operative photograph shows a focal articular cartilage defect in the medial femoral condyle of the knee. After arthroscopic preparation, multiple small drill holes were placed through the subchondral bone (subchondral drilling, sometimes called microfracture when an awl is used). Bone marrow elements bleed into the defect and form a stable clot that matures into fibrocartilage repair tissue. This technique is most appropriate for smaller cartilage defects. Procedure: Subchondral drilling (microfracture) Case Study ### Umbilical cord blood mesenchymal stem-cell implantation Defect in the medial femoral condyle after stem cell implantation as part of the Cartistem® FDA trial. This image shows a medial femoral condyle defect immediately after implantation of mesenchymal stem cells derived from umbilical cord blood, mixed with hyaluronan. The stem cells were obtained from healthy newborn umbilical cord and placental tissue (otherwise discarded after delivery), grown in culture, and pasted into pre-drilled holes within the prepared defect. This was performed as part of an FDA-supervised clinical trial — see our active trials page for current research. Procedure: Umbilical cord MSC transplantation (Cartistem® trial) ## More patient outcomes - Video success stories — patient testimonials on Iron Man racing after cartilage transplant, BEAR ACL repair, partial knee replacement, and more - Written testimonials — 16+ patients on cartilage repair, ACL reconstruction, meniscus transplantation, and HTO - In the news — CBS, ABC, ESPN coverage of Dr. Gomoll's cartilage and stem-cell work - Active clinical trials — participate in advancing the field ## Could one of these procedures be right for you? Dr. Gomoll evaluates each case individually using high-resolution imaging and a focused clinical exam. Schedule a Consultation Call 646-917-7441 --- ## Clinical Trials | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/clinical-trials/ Summary: Actively enrolling and completed clinical trials with Dr. Andreas Gomoll — Hyalex Knee Cartilage System, NUsurface meniscus implant, ReNu stem cells, Atlas Knee, Cartistem, Agili-C, and more. Dr. Gomoll is currently enrolling patients in the Hyalex EFS trial of the HYALEX® Knee Cartilage System — a new option for replacement of articular cartilage and bone of the knee femoral condyles. Several other trials (NUsurface, ReNu, Atlas, Cartistem, Agili-C, Flexion FX006) have completed enrollment and are in follow-up. To inquire about eligibility, call 646-917-7441 or schedule a consultation. Now recruiting ## Actively enrolling trials Now Enrolling ### Hyalex EFS — HYALEX® Knee Cartilage System Prospective, multicenter, single-arm, 2-phase Early Feasibility Study (EFS) of the HYALEX® Knee Cartilage System. The Hyalex EFS is a prospective, open-label, single-arm trial evaluating the safety and technical performance of the HYALEX Knee Cartilage System for replacement of loss of articular cartilage and bone of the knee femoral condyles in symptomatic patients who require surgical treatment. Enrolled patients undergo implantation of the HYALEX Knee Implant. Interested? Call 646-917-7441 or request a consultation to ask about eligibility. Research history ## Completed trials or closed to enrollment In follow-up #### VENUS — NUsurface® meniscus implant The VENUS study compares the NUsurface meniscus implant to non-surgical standard-of-care treatment (physical therapy, injections, bracing). The implant is an artificial device made from polycarbonate-urethane (PCU) reinforced with ultra-high molecular weight polyethylene fibers, designed to function similarly to a natural meniscus by distributing contact pressure and joint load. Closed to enrollment; in follow-up at Brigham and Women's. Complete #### ReNu™ Knee Injection — stem-cell trial for osteoarthritis Randomized clinical trial assessing the efficacy of the ReNu™ knee injection — a suspension made from amniotic membrane and amniotic fluid stem cells — for symptomatic knee osteoarthritis. Patients were randomized to stem-cell injection, joint-lubrication injection (Monovisc, high-molecular-weight hyaluronan), or saline (placebo). Patients whose pain did not improve at 3 months without active treatment could cross over to ReNu™. One-year follow-up. Trial complete. In follow-up #### Atlas Knee System Trial assessing the Atlas Knee System for symptomatic medial-compartment knee osteoarthritis. The Atlas system is designed to absorb excess joint load in the diseased medial compartment via a central spring component, with the goal of reducing pain, improving function, and delaying knee replacement in young, active, arthritic patients. Closed to enrollment; in follow-up at Brigham and Women's. Complete #### Cartistem® — umbilical cord-blood stem cells Phase I/IIa trial investigating implantation of human umbilical cord blood-derived mesenchymal stem cells with sodium hyaluronate to regenerate cartilage and reduce pain. Trial complete. Closed #### Agili-C™ vs. Surgical Standard of Care Prospective multicenter open-label randomized trial comparing the Agili-C™ implant to surgical standard of care (microfracture or debridement) for joint surface lesions of the knee. The implant has two components: a coral-based cylinder placed onto bone, and a hyaluronic acid liquid layer on top. Both are absorbed and replaced by new tissue over time. Closed for enrollment. Complete #### Flexion FX006 (Zilretta®) — extended-release triamcinolone Trial of the safety and tolerability of repeat administration (two doses of 40 mg) of FX006 — an extended-release formulation of triamcinolone acetonide — for symptomatic knee osteoarthritis. Get involved ## Inquire about a trial To find out if you are eligible for any of Dr. Gomoll's open trials, call our office or request a consultation: Call 646-917-7441 Request a Consultation Several of these studies evaluate regenerative medicine and stem-cell therapies. For background on Dr. Gomoll's publications and research credentials, visit those pages. ## Interested in joining a trial? Call our office or request a consultation to find out about eligibility for actively enrolling studies. Call 646-917-7441 Request a Consultation --- ## Curriculum Vitae — Andreas H. Gomoll, MD | NYU Langone, New York Source: https://andreasgomollmd.com/curriculum-vitae/ Summary: Full curriculum vitae of Dr. Andreas H. Gomoll, MD — Professor of Orthopedic Surgery at Weill Cornell Medical College and Orthopedic Surgeon at NYU Langone Orthopedic Center: education, appointments, board certification, honors, memberships, presentations, and bibliography. The complete curriculum vitae of Dr. Andreas H. Gomoll — education and training, professional positions, board certification and licensure, hospital affiliations, honors and awards, society memberships, leadership roles, invited presentations, and full bibliography. Prepared June 2025. 25+Years in Practice 2Board Certifications 217Publications 190Invited Lectures Download CV (Word) ← Back to Dr. Gomoll's bio ## Professional Summary Dr. Andreas H. Gomoll is a fellowship-trained orthopedic surgeon and Professor of Clinical Orthopedic Surgery at Weill Cornell Medical College, and an Orthopedic Surgeon at NYU Langone Orthopedic Center in New York. He is internationally recognized for cartilage repair and joint preservation of the knee and shoulder, with more than two decades of clinical practice, surgical education, and peer-reviewed research. ## Education - M.D., Medicine Ludwig-Maximilians Universitaet Medical School, Munich, Germany — Magna cum laude 1997 - Ph.D. Technische Universitaet Muenchen, Munich, Germany — Magna cum laude 1998 ## Postdoctoral Training - Intern, Orthopaedic SurgeryBogenhausen Hospital, Munich, Germany1997 – 1998 - Research Fellow, Orthopaedic SurgeryBrigham and Women’s Hospital, Boston, MA1998 – 2000 - Intern, General SurgeryBrigham and Women’s Hospital, Boston, MA2000 – 2001 - Resident, Orthopaedic SurgeryHarvard Combined Orthopaedic Residency Program, Massachusetts General Hospital, Boston, MA2001 – 2005 - Fellow, Orthopaedic Sports MedicineRush University Medical Center, Chicago, IL2005 – 2006 ## Professional Positions & Employment ### Academic Appointments - Instructor, Orthopaedic SurgeryRush Medical College, Chicago, IL2005 – 2006 - Clinical Instructor, Orthopaedic SurgeryHarvard Medical School, Boston, MA2006 – 2008 - Assistant Professor, Orthopaedic SurgeryHarvard Medical School, Boston, MA2008 – 2014 - Associate Professor, Orthopaedic SurgeryHarvard Medical School, Boston, MA2014 – 2018 - Associate Professor, Orthopaedic SurgeryWeill Cornell Medical School, New York, NY2018 – 2022 - Professor of Clinical Orthopaedic SurgeryWeill Cornell Medical School, New York, NY2022 – present ### Hospital Appointments - Adjunct Attending / House StaffRush University Medical Center, Chicago, IL2005 – 2006 - Associate Orthopaedic SurgeonBrigham and Women’s Hospital, Boston, MA2006 – 2018 - Associate Orthopaedic SurgeonHospital for Special Surgery, New York, NY2018 – 2022 - Orthopaedic SurgeonHospital for Special Surgery, New York, NY2022 – 2026 - Orthopaedic SurgeonNYU Langone Orthopedic Center, New York, NY2026 – present ## Licensure & Board Certification ### Board Certification - American Board of Orthopaedic Surgery — Orthopaedic SurgeryCertified 2008 – 2028 - American Board of Orthopaedic Surgery — Orthopaedic Sports Medicine (Subspecialty)Certified 2009 – 2028 ### State Medical Licensure New York · Massachusetts · Connecticut · New Jersey DEA: NY FG7186023 · NPI: 1649259946 ## Hospital Affiliation Primary Hospital Affiliation: Hospital for Special Surgery, New York, NY — the nation’s top-ranked hospital for orthopedics. ## Honors & Awards - Arthritis Foundation Fellowship AwardArthritis Foundation1999 - Marshall R. Urist Research AwardOrthopaedic Research and Education Foundation2002 - Excellence in Teaching NomineeHarvard Medical School2005 - Traveling FellowshipHerodicus Society2006 - Young Investigator AwardAmerican Orthopaedic Society for Sports Medicine2006 - Young Investigators Initiative AwardeeUS Bone and Joint Decade2007 - APOSSM Traveling Fellowship — Pacific RimAmerican Orthopaedic Society for Sports Medicine2009 - Excellence in Mentoring NomineeHarvard Medical School2012–2013 - John Insall Award — “A Minimum 10-Year Outcome Study of Autologous Chondrocyte Implantation”The Knee Society2013 - Musculoskeletal Best Paper AwardBWH Biomedical Research Institute2013 - World Congress Cum Laude Paper Award — Etiology of cartilage lesions does not affect clinical outcomes of patellofemoral ACIInternational Cartilage Repair Society2019 - World Congress Best Paper Award — Hypertension Increases Graft Failure Rate After Autologous Chondrocyte ImplantationInternational Cartilage Repair Society2019 ## Professional Organizations & Society Memberships - American Academy of Orthopaedic Surgeons (AAOS)Fellow2005– - American Orthopaedic Society for Sports Medicine (AOSSM)Fellow2006– - International Cartilage Repair Society (ICRS)Member; General Board Member; Course Director; Conference President2006– - Magellan SocietyMember2009– - Cartilage Research Foundation (CRF)Member2010– - International Society of Arthroscopy, Knee Surgery, and Orthopaedic Sports Medicine (ISAKOS)Member2010– - European Society of Sports Traumatology, Knee Surgery and Arthroscopy (ESSKA)Member2011– - Arthroscopy Association of North America (AANA)Member2012– - Herodicus SocietyMember2017– - International Patellofemoral Study GroupMember2017– - ICRS FoundationTreasurer2020– ## Institutional & Professional Leadership ### Institutional Leadership - Co-Medical Director (Orthopaedic Surgery) Foxborough BWH/MGH Health Care Center · Brigham and Women’s Hospital · 2008 – 2018 - Co-Director (Orthopaedic Surgery) BWH Orthopaedics and Arthritis Center · Brigham and Women’s Hospital · 2011 – 2018 - Co-Chair BWH Center for Regenerative Medicine · Brigham and Women’s Hospital · 2015 – 2018 - Director Orthopedic Program, BWH Center for Regenerative Medicine · Brigham and Women’s Hospital · 2015 – 2018 ### Administrative Committees - Bone Biology Committee · Member · 2019 – present - Sports CRP · Member · 2020 – present - Regenerative Medicine CRP · Member · 2020 – present - MSK population health committee, sports service sub-committee · Member · 2020 - PROMS advisory committee · Member · 2020 ### Society Committee Service - Fellowship, scholarship and grants · Member · ICRS · 2010-2012 - Regulatory affairs · Member · ICRS · 2012-2015 - Regulatory affairs · Chair · ICRS · 2015-2017 - Knee sports and preservation · Member · ISAKOS · 2015-2019 - Cartilage · Member · ESSKA · 2016-2019 - World congress program · Member · ICRS · 2016 - Publications · Member · ICRS · 2017-2019 - Members and Bylaws · Co-dep chair · ICRS · 2019 – present ## Editorial Activities ### Editor / Co-Editor - Cole BJ, Sekiya J (Eds.); Gomoll AH, Rihn J (Co-Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. Philadelphia, PA: Saunders - Elsevier · 2008 - Cole BJ, Gomoll AH (Eds.): Biologic Joint Reconstruction: Alternatives to Arthroplasty. Thorofare, NJ: SLACK Inc · 2009 - Cole BJ, Gomoll AH (Eds.): Complications in Orthopaedics – Cartilage Repair. Rosemont, IL: AAOS · 2011 - Farr J, Gomoll AH (Eds.): Cartilage Restoration: Practical Clinical Application. New York, NY: Springer · 2013 - Amendola N, Gomoll AH (Eds.). Let’s discuss – Joint preservation of the knee. Rosemont, IL: AAOS · 2015 - Farr J, Gomoll AH (Eds.): Cartilage Restoration: Practical Clinical Application, 2nd Edition. New York, NY: Springer · 2018 - Gomoll AH (Guest Editor): Failure in Joint Preservation – Diagnosis and Revision Strategies Issue 1. Journal: Operative Techniques in Sports Medicine. Elsevier · 2020 - Krych AJ, Biant LC, Gomoll AH, Nakamura N (eds.) Cartilage Injury of the Knee: State-of-the-Art Treatment and Controversies. Springer · 2021 ### Editorial Board Membership - Journal of Knee Surgery — 2007–2010 - Cartilage: Basic and Clinical Research (ICRS) — 2009–present - Orthopaedic Journal of Sports Medicine (AOSSM) — 2013–present - Knee Surgery, Sports Traumatology, Arthroscopy (KSSTA) — 2019–present - The Journal of Cartilage and Joint Preservation (ICRS) — 2021–present Peer / ad-hoc reviewer for the American Journal of Sports Medicine (Principal Reviewer), Journal of Bone and Joint Surgery, Journal of Orthopaedic Research, Arthroscopy, KSSTA, Osteoarthritis and Cartilage, The Knee, and others. ## Invited & Peer-Selected Presentations 190 invited lectures, grand rounds, and conference presentations delivered regionally, nationally, and internationally. Regional (19) - Cartilage repair - current options and future developments- Grand Rounds · Dept. of Orthopaedic Surgery Yale-New Haven Hospital, Yale University, New Haven · July 15, 2007 - Cartilage restoration- Invited Lecture · Connecticut Orthopedic Society Annual Meeting, Hartford · May 16, 2008 - Cartilage repair- Grand Rounds · Dept. of Orthopaedic Surgery, Tufts Medical Center, Tufts University, Boston · January 12, 2009 - Indications for distal patellofemoral realignment- Invited Lecture High tibial osteotomy – clinical pathways and surgical planning- Invited Lecture Cartilage repair - current techniques and controversies- Grand Rounds · Boston Sports Medicine Symposium, Boston (Sponsor: Arthrex) Boston Sports Medicine Symposium, Boston (Sponsor: Arthrex) Dept. of Orthopaedic Surgery, U Mass Medical Center, University of Massachusetts Medical School, Worcester · January 12, 2009 January 12, 2009 February 11, 2009 - Comprehensive Assessment & Management Techniques of Patients with Articular Cartilage Injuries- Invited Lecture · Advanced Concepts in ACI, Boston (Sponsor: Genzyme BioSurgery) · June 13, 2009 - Diagnosis and treatment of chondral defects/Grand Rounds · Dept. of Orthopaedic Surgery, Boston Medical Center, Boston University, Boston · August 10, 2009 - Overview of the diagnosis of cartilage defects, indications and treatment algorithm-Invited Lecture · NH Musculoskeletal Institute 11th Annual Orthopedic Winter Meeting, Stowe, VT · January 28-29, 2011 - Osteotomy for the management of osteoarthritis-Invited Lecture · NH Musculoskeletal Institute 11th Annual Orthopedic Winter Meeting, Stowe, VT · January 28-29, 2011 - Common Musculoskeletal Issues – What the Primary Provider needs to know-Grand Rounds · Leonard Morse Hospital, Natick, MA · September 19, 2011 - Update on Cartilage Repair-Invited Lecture · Annual Meeting of the Maine Orthopaedic Society, Portland, ME · October 1, 2011 - What’s New in Cartilage Restoration-Invited Lecture · NYU-HJD 4th Annual Articular Cartilage Repair Course, New York, NY · June 1, 2012 - Cartilage Repair-Invited Lecture · NH Musculoskeletal Institute, Manchester, NH · September 15, 2012 - Cartilage Repair of Early OA-Invited lecture · 17th annual NHMI meeting, Stowe, VT · January 21, 2017 - Stem cells for cartilage repair and OA-Invited lecture · 17th annual NHMI meeting, Stowe, VT · January 21, 2017 - Cartilage Repair in the Patellofemoral Joint- Invited Lecture · HSS Workshop on Patellofemoral Disorders, New York, NY · April 27, 2017 - Osteotomy for cartilage and meniscal issues – Grand Rounds · Lenox Hill Hospital, New York, NY · April 9, 2018 - Joint preservation: Options for the young arthritic – Invited lecture · Connecticut Orthopedic Society Meeting, Farmington, CT · May 11, 2018 - My experience with MACI – Invited lecture · Connecticut Orthopedic Society Meeting, Farmington, CT · May 11, 2018 - Cartilage repair – my approach – Invited lecture · HSS Sports Medicine Symposium · May 21, 2021 National (115) - Chondrotoxicity of bupivacaine infusion- Invited Lecture · 20th Annual Fellowship Alumni Research Conference, Kerlan-Jobe Orthopaedic Foundation, Hershey, PA · June 30, 2006 - Wrist and Elbow Arthroscopy: Techniques and Innovations- Course Faculty · AAOS/ASSH Orthopaedic Learning Center Course, Rosemont, IL · 2006 - Cartilage Repair-Grand Rounds · Dept. of Orthopaedic Surgery, University of Nebraska at Omaha, Omaha, NE · August 8, 2008 - Translational research - impact on clinical practice- Session co-moderator · AOSSM annual meeting, Orlando, FL · July 12, 2008 - Surgical management of articular cartilage defects of the knee - ICL 302-Course faculty · AAOS annual meeting, Las Vegas, NV · February 27, 2009 - AAOS/ASES Open and arthroscopic techniques in shoulder surgery-Course faculty · Orthopaedic Learning Center, Rosemont, IL · May 15, 2009 - Regulatory issues in cartilage repair- Session co-moderator · ICRS World Congress, Miami, FL · May 23, 2009 - Better quality follow-up: Outcome measures after cartilage repair-Invited Lecture · ICRS World Congress 2009, International Cartilage Repair Society, Miami, FL (Sponsor: Tigenix) · May 25, 2009 - Surgical management of articular cartilage defects of the knee - ICL 362-Course moderator and faculty · AAOS annual meeting, New Orleans, LA · March 12, 2010 - Cartilage and meniscus-Session co-moderator · AOSSM specialty day, New Orleans, LA · March 13, 2010 - Diagnosis and Treatment Strategies for Articular Cartilage Lesions-Grand Rounds · Dept. of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, OH · March 26, 2010 - Current Concepts in ACI-Invited Lecture · 50th Annual Post-Graduate Seminar of the American Osteopathic Academy of Orthopedics, Orlando, FL · March 27, 2010 - AANA Cartilage Course-Associate Master Instructor · Orthopaedic Learning Center, Rosemont, IL · August 27, 2010 - The diagnosis and treatment of cartilage defects-Grand Rounds · Dept. of Orthopaedic Surgery, Georgetown University, Washington, DC · October 26, 2010 - Surgical management of articular cartilage defects of the knee - ICL 202-Course moderator and faculty · AAOS annual meeting, San Diego, CA · February 16, 2011 - Cartilage Repair-Grand Rounds · Dept. of Orthopaedic Surgery, Temple University, Philadelphia, PA · May 4, 2011 - Treatment of cartilage disorders of the knee-Invited Lecture · Pennsylvania Orthopaedic Society Meeting, Philadelphia, PA · May 4, 2011 - Case Based: Treatment of Knee Cartilage Defects - ICL 103-Course faculty · AOSSM annual meeting, San Diego, CA · July 7, 2011 - AANA Master’s Experience in Cartilage Repair-Course Faculty · Orthopaedic Learning Center, Rosemont, IL · October 28-30, 2011 - Biologic Joint Reconstruction – Cartilage Repair, Biologic Joint Reconstruction – Concurrent Procedures, Sports Medicine Visiting Lectureship Decision Making and Review of Cartilage Repair-Invited Lecture, Cell-based Therapy now and in the next 5 years-Invited Lecture AANA Patellofemoral Surgery Course- Associate Master Instructor · Dept. of Orthopaedic Surgery, Detroit Medical Center, Detroit, MI Metcalf Meeting, Scottsdale, AZ Orthopaedic Learning Center, Rosemont, IL · November 16, 2011 January 17, 2012 January 21, 2012 - Surgical management of articular cartilage defects of the knee - ICL 322-Course moderator and faculty Controversies and Techniques in the Surgical Management of Patellofemoral Disease - ICL 362- Course faculty (for Minas) · AAOS annual meeting, San Francisco, CA AAOS annual meeting, San Francisco, CA · February 9, 2012 February 9, 2012 - The Arthroscopic and Minimally-Invasive Treatment of Knee Cartilage Pathology: Strategies and Current Approaches - ICL 311-Course faculty (for Minas) Managing the Active Patient with Knee Arthritis: Delaying or Preventing Arthroplasty – Symposium-Course faculty · AAOS annual meeting, San Francisco, CA AAOS annual meeting, San Francisco, CA · February 9, 2012 February 10, 2012 - What’s New in Cartilage Restoration-Invited Lecture Autologous Chondrocyte Implantation-Invited Lecture, Symposium: Articular Cartilage - Isolated Articular Cartilage Lesions in the Young Athlete: A Case-Based Approach to Decision-Making Biologic Joint Reconstruction- Invited Lecture · NYU-HJD 4th Annual Articular Cartilage Repair Course, New York, NY AOSSM annual meeting, Baltimore, MD Steadman Clinic, Vail, CO · June 1, 2012 July 14, 2012 July 23, 2012 - Cell-based Cartilage Repair-Invited Lecture, Realignment Osteotomy-Invited Lecture AANA Master’s Experience in Cartilage Repair-Associate Master Instructor · Sports Medicine Conference, Aurora BayCare, Green Bay, WI Orthopaedic Learning Center, Rosemont, IL · September 14, 2012 October 6, 2012 - Patient reported outcome instruments for use in patients with articular cartilage defects-Invited Lecture · FDA CBER Office of Cellular Tissue and Gene Therapy, Bethesda, MD · November 8, 2012 - AANA Patellofemoral Surgery Course-Associate Master Instructor · Orthopaedic Learning Center, Rosemont, IL · April 13, 2013 - Cell-based Cartilage Repair-Invited Lecture, Cartilage Repair in the Patellofemoral Joint-Invited Lecture · 16th Annual Tria Sports Medicine Conference, U Minnesota, Minneapolis, MN · June 7, 2013 - Cartilage Restoration – Available Options in 2013-Grand Rounds · Dept.of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY · October 9, 2013 - Surgical Management of Articular Cartilage Defects of the Knee – ICL 230-Course faculty · AAOS annual meeting, New Orleans, LA · March 12, 2014 - The 4 most common types of cartilage damage you will see in practice: how we treat them and why – ICL 353- Course moderator and faculty · AAOS annual meeting, New Orleans, LA · March 13, 2014 - Articular Cartilage Disease and Meniscal Deficiency – ICL 416-Course faculty · AAOS annual meeting, New Orleans, LA · March 14, 2014 - Symposium: Cartilage – Scratching the surface. ACI-Invited lecture · AOSSM annual meeting, Seattle, WA · July 11, 2014 - Post-meniscectomy syndrome – ICL 307-Course moderator and faculty · AOSSM annual meeting, Seattle, WA · July 12, 2014 - AANA Cartilage Course-Associate Master Instructor · Orthopaedic Learning Center, Rosemont, IL · November 21, 2014 - Joint “Organ“ - Comprehensive Concepts for Cartilage Restoration-Invited lecture · ISMF 2015, Carlsbad, CA · January 24, 2015 - The status of MACI-Invited lecture · AOSSM Biologics II Think-tank, Colorado Springs, CO · February 28, 2015 - Results of meniscal transplantation and who to consider and who not to-Invited lecture, ACI – When to consider and how it’s done-Invited lecture, Management of articular treatment failure-Invited lecture, Osteotomies with articular cartilage pathology-Invited lecture · AANA/Metcalf meeting, Snowbird, UT · March 6, 2015 - Surgical Management of Articular Cartilage Defects of the Knee – ICL 133-Course moderator and faculty · AAOS annual meeting, Las Vegas, NV · March 24, 2015 - Articular Cartilage Disease and Meniscal Deficiency – ICL 150-Course moderator and faculty · AAOS annual meeting, Las Vegas, NV · March 24, 2015 - The 4 most common types of cartilage damage you will see in practice: how we treat them and why – ICL 351-Course moderator and faculty · AAOS annual meeting, Las Vegas, NV · March 26, 2015 - Management of patellofemoral arthritis – ICL 452-Course faculty · AAOS annual meeting, Las Vegas, NV · March 27, 2015 - State of the art approach to chondral injury – ICL 107-Course faculty · AANA annual meeting, Los Angeles, CA · April 23, 2015 - Management of patellofemoral instability: stabilization and cartilage restoration – ICL 206-Course faculty · AANA annual meeting, Los Angeles, CA · April 24, 2015 - Cartilage defects – diagnosis, indications and treatment algorithm-Invited lecture · ICRS surgical skills course, Rosemont, IL · May 7, 2015 - Meet the experts – cartilage repair-Invited lecture, AGA/ICRS combined session-Session moderator, Cartilage repair in high performance athletes-Session moderator · ICRS World Congress, Chicago, IL · May 10, 2015 - What do you use and why for cartilage treatment – cell based therapy-Invited lecture · AOSSM annual meeting, Orlando, FL · July 10, 2015 - Biologic joint reconstruction-Grand Rounds · Northwestern University Medical Center, Chicago, IL · July 17, 2015 - Articular cartilage problems: surface options-Invited Lecture, Articular Problems of the PF joint-Invited Lecture · Current Solutions in Sports Medicine & Arthroscopic Surgery, Chicago, IL · August 15, 2015 - The use of amniotic stem cells for treatment of OA-Invited Lecture, Current concepts of ACI-Invited Lecture · Advanced Concepts in Sports Medicine and Orthopaedic Surgery, Las Vegas, NV · November 7, 2015 - Comprehensive concepts for cartilage restoration-Invited Lecture · International Sports Medicine Fellow’s Conference, Carlsbad, CA · January 23, 2016 - The 4 most common types of cartilage damage you will see in practice: how we treat them and why – ICL 129-Course moderator and faculty · AAOS annual meeting, Orlando, FL · February 29, 2016 - Management of patellofemoral arthritis – ICL 249-Course faculty · AAOS annual meeting, Orlando, FL · March 2, 2016 - Joint preservation techniques – ICL 430-Course faculty · AAOS annual meeting, Orlando, FL · March 4, 2016 - Articular Cartilage Disease and Meniscal Deficiency – ICL 488-Course co-moderator and faculty · AAOS annual meeting, Orlando, FL · March 4, 2016 - State of the art approach to chondral injury – ICL 104-Course faculty Complex patellofemoral surgical cases and issue – ICL 204-Course faculty Clinical case panel: Knee cartilage – Panel member · AANA annual meeting, Boston, MA · April 14-16, 2016 - Failed cartilage repair – ICL202-Course moderator and faculty Articular Cartilage-Session moderator · AOSSM annual meeting, Colorado Springs, CO · July 8-9, 2016 - Cartilage Repair – surface options-Invited Lecture MCL – When to Fix? Technique and evidence-Invited Lecture · 2016 Chicago Sports Medicine Symposium, Chicago, IL · August 8, 2016 - AANA Patellofemoral Course-Associate Master Instructor AANA Cartilage and Meniscus Course-Associate Master Instructor · Orthopaedic Learning Center, Rosemont, IL · September 9-10, 2016 - Joint preservation techniques – ICL 251-Course faculty Patellofemoral arthritis – ICL 271-Course faculty · AAOS annual meeting, San Diego, CA · March 15, 2017 - Surgical Spotlight: Treatment of articular cartilage defects-Panel faculty · AOSSM specialty day, San Diego, CA · March 18, 2017 - Biologics for Knee Cartilage Defects-Visiting Professor Lecture Osteotomy for cartilage defects and meniscal deficiency-Visiting Professor Lecture · Resident thesis day, Loma Linda University, CA · April 21, 2017 - Distal femoral osteotomy for patellofemoral instability-Course faculty, Management of Patellofemoral Instability – ICL 104, Next Generation Technology: On the horizon-Course Faculty, State of the Art Approach to Chondral Injury – ICL 205 · AANA annual meeting, Denver, CO · May 18, 2017 - Treatment of patellofemoral cartilage lesions – Invited Lecture · Innovative Techniques. Knee, hip and shoulder course 2017, Las Vegas, NV · October 20, 2017 - Introduction to Cartilage Repair: My algorithm for Large Cartilage Lesions – Invited Lecture · International Sports Medicine Fellows Course, Carlsbad, CA · January 26, 2018 - Knee: Articular Cartilage – Session Moderator Viable Osteochondral Allografting for Cartilage Lesions – Invited Lecture Patellofemoral Lesion: Why These are Different and Tricks for Managing Them – Invited Lecture Indications for Osteotomy - Why is There Conflict Between Europe and USA? – Invited Lecture Video Spotlight: Distal Femoral Tibial Osteotomy · 2018 Shoulder, Knee and Sports Meeting, Snowbird, CO · February 24, 2018 - The role of biologics for cartilage disease – Course Faculty, Joint preservation techniques – ICL 312 · AAOS annual meeting, New Orleans, LO · March 8, 2018 - Challenges of delivering new cartilage products for patients – Invited Lecture · AAOS annual meeting, New Orleans, LO · March 8, 2018 - Patellofemoral cartilage repair – Course Faculty, Patellar Instability and Dislocation: Optimizing surgical treatment – ICL 414 · AAOS annual meeting, New Orleans, LO · March 9, 2018 - Meniscal deficiency in ACL deficiency – Course Moderator and Faculty, Optimizing ACL outcomes: what else needs fixing besides the ACL – ICL 429 · AAOS annual meeting, New Orleans, LO · March 9, 2018 - Surface treatment options for PF cartilage defects – Course Faculty, Cartilage Disease of the PF joint – ICL 468 · AAOS annual meeting, New Orleans, LO · March 9, 2018 - Osteochondral allograft transplantation- Invited Lecture AOSSM specialty day · AAOS annual meeting, New Orleans, LO · March 10, 2018 - Biologics – Course Faculty, Joint preservation – ICL 104 · AOSSM annual meeting, San Diego, CA · July 5, 2018 - Debate: Surface or solid? What should we do? – Invited lecture · AOSSM annual meeting, San Diego, CA · July 5, 2018 - Cartilage case-based panel discussion – Panel member · AOSSM annual meeting, San Diego, CA · July 5, 2018 - Contemporary technique: Tibial osteotomy · AOSSM annual meeting, San Diego, CA · July 7, 2018 - Surface Options for Articular Cartilage Reconstruction: Established and Emerging – Invited Lecture Trochleoplasty – When and How? – Invited Lecture Meniscus Session – Session Moderator · Chicago Sports Medicine Symposium, Chicago, IL · September 15, 2018 - Sports Medicine Session – Session Moderator Great debate – meniscus implant and osteotomy – Invited lecture Symposium 5A – Session Moderator Cartilage repair in the weekend warrior – Invited lecture · Eastern Orthopaedic Society annual meeting, Amelia Island, FL · October 18-19, 2018 - Getting It Right: Lateral Anatomy and Soft Tissue Balancing – Invited Lecture My treatment algorithm for large and complex cartilage defects – Invited Lecture Cell Based Cartilage Repair (PJAC, MACI) in 2019 – Invited Lecture · 19th International Sports Medicine Fellows Course, Carlsbad, CA · January 18-19, 2019 - Knee: Articular Cartilage – Session Moderator Viable Osteochondral Allografting for Cartilage Lesions – Invited Lecture Patellofemoral Lesion: Why These are Different and Tricks for Managing Them – Invited Lecture Indications for Osteotomy - Invited Lecture Video Spotlight: Distal Femoral Tibial Osteotomy – Invited Lecture · Shoulder, Knee and Sports Meeting, Snowbird, CO · February 21-23,2019 - Surface treatment options for PF cartilage defects – Course Faculty, Cartilage Disease of the PF joint – ICL 172 · AAOS annual meeting, Las Vegas, NV · March 12, 2019 - Patellofemoral cartilage repair – Course Faculty, Patellar Instability and Dislocation: Optimizing surgical treatment – ICL 213 · AAOS annual meeting, Las Vegas, NV · March 13, 2019 - Osteochondral fracture repair – Course faculty, PF 101 – Back to the basics – ICL 370 · AAOS annual meeting, Las Vegas, NV · March 14, 2019 - Meniscal deficiency in ACL deficiency – Course Moderator and Faculty, Optimizing ACL outcomes: what else needs fixing besides the ACL – ICL 429 · AAOS annual meeting, Las Vegas, NV · March 15, 2019 - Surface treatment of cartilage defects – MACI and PJAC – Course Faculty, Chondral Injury of the Knee: Current Controversies in 2019 – ICL 143 · AANA annual meeting, Orlando, FL · May 2, 2019 - Five questions to Andreas Gomoll, MD – Invited Lecture Osteotomies for patellar instability – Course Faculty, Management of patellofemoral instability – ICL 301 · AANA annual meeting, Orlando, FL · May 3, 2019 - MACI for the treatment of patellar defects · AANA annual meeting, Orlando, FL · May 4, 2019 - Update on Biologics for Cartilage Repair – Invited Lecture · CT Orthopedic Society Meeting, Hartford, CT · May 10, 2019 - Cartilage and meniscus – Session Moderator · AOSSM annual meeting, Boston, MA · July 11, 2019 - Biologics – Course Faculty, Joint preservation – ICL · AOSSM annual meeting, Boston, MA · July 12, 2019 - Internal unloader bracing – Invited lecture 30 year old with patellar defect, cells versus plugs – Panel moderator Case presentations – Panel member · Orthopaedic Summit, Las Vegas, NV · December 13, 2019 - Bone marrow aspirate concentrate in the OR – Invited lecture · Biologic Alliance meeting, Carlsbad, CA · January 6, 2020 - Cell-based cartilage repair in 2020 – Invited lecture Getting it right: lateral anatomy and soft tissue balancing – Invite lecture · International Sports Medicine Fellows Meeting, Carlsbad, CA · January 7-8, 2020 - State of the art OC allograft transplantation – What I have learned – Grand Rounds (online) · Steadman Clinic, Vail, CO · April 21,2020 - What is the role of MACI and has it changed my indications since ACI? – Invited lecture · AANA webinar · October 13, 2020 - Biologics in Arthritis – Invited lecture · NYOSS annual meeting (online) · November 7, 2020 - Knee cartilage restoration – Webinar moderator · AANA webinar · November 18, 2020 - Evaluation and treatment of the symptomatic OCD: my decision making – Invited lecture, Clinical case presentations Q&A: MPFL complications – Case panel moderator · Orthopaedic Summit, Online · December 10-12, 2020 - The rationale for biologics – Invited lecture · Biologic Association webinar · April 23, 2021 - Cell-based therapy PJAC and MACI – Invited lecture Laterally based PF surgery – Invited lecture · ISMF virtual conference · May 1, 2021 - Cartilage repair case panel – Panel chair · AANA complex knee course Orthopedic Learning Center Rosemont, IL · June 12, 2021 - Cell-based cartilage repair – Cartilage Repair ICL – Invited lecture Cartilage repair case panel – Panel member Bucket-handle meniscus tears – Meniscus repair and transplantation ICL – Invited lecture · AOSSM – AANA combined annual meeting Nashville, TN · July 8-11, 2021 - The rationale for biologics · Biologic Association webinar · January 20, 2022 - Osteotomy of the knee – ICL Cell-based cartilage repair – ICL Femoral lesions: surgical decision making in 2022 – Invited lecture · AANA annual meeting, San Francisco, CA · May 19-20,2022 - Osteotomy – recognizing and avoiding complications – Grand Rounds · Emory, Dept. of Orthopaedic Surgery (Online) · June 28, 2022 - Implantable shock absorber for medial compartment OA – Invited lecture PF cartilage repair – Invited lecture OATS for cartilage repair – Invited lecture OCD lesion treatment – Invited lecture · OSET 2022, Boston, MA · September 22, 2022 - High tibial osteotomy - ICL · AAOS, Las Vegas, NV · March 9, 2023 - Cartilage conundrums – ICL · AANA annual meeting, New Orleans, LA · May 6, 2023 - Failure of cartilage repair – Invited lecture Cartilage defects associated with RPI – Invited lecture · ISAKOS, Boston, MA · June 20, 2023 - Osteotomies for PF instability – Invited lecture The implantable shock absorber – Invited lecture Cartilage repair algorithm – Invited lecture · OSET 2023, Boston, MA · September 23, 2023 - This is the kind of cartilage damage I see all the time – ICL Anterior closing wedge HTO – ICL UKA for medial compartment disease – Invited lecture · AANA annual meeting, Boston, MA · May 9, 2024 - ACL repair with the BEAR technique – ICL · AOSSM annual meeting, Denver, CO · July 12, 2024 - Cartilage case presentations – Moderator · IPSG, Big Skye, MT · August 16, 2024 - Allografts in Sports Medicine – Invited lecture · AANA – JRF webinar · October 8th, 2024 - Cartilage repair in patellar instability – Invited lecture · AANA webinar · October 21st, 2024 - Correcting the slope – Invited lecture · AANA annual meeting, Washington, DC · May 9, 2025 International (56) - ACI in the patellofemoral joint-Invited Lecture · 23. Annual Conference, Gesellschaft fuer Orthopaedisch-Traumatologische Sportmedizin, Munich, Germany · June 21, 2008 - Microfracture - What is the evidence?-Invited Lecture, Conference on Bioregenerative Medicine, ACI - Meet the Experts · Prague, Czech Republic (Sponsor: Tigenix) · February 7, 2009 - Session 6 – ACL- Session Co-Moderator · Hiroshima University, Post-ISAKOS (International Society of Arthroscopy, Knee Surgery and Orthopedic Sports Medicine) meeting, Hiroshima, Japan · April 11, 2009 - ACI for the treatment of early osteoarthritis- Invited Lecture · Taiwan Arthroscopy Association Yearly Meeting, Taipei, Taiwan · April 18, 2009 - Subchondral bone repair after microfracture- Invited Lecture · “The subchondral bone in cartilage repair”. Focus meeting of the ESSKA cartilage committee, Mondorf-les-bains, Luxembourg · October 8-9, 2009 - Is microfracture a true alternative to ACI?- Invited Lecture · Forum for Advanced Medical Education, St. Marien Hospital, Gelsenkirchen, Germany · February 13, 2010 - Meniscus Injuries – Overview of Therapeutic Approaches-Invited Lecture, Cartilage Repair Overview-Invited Lecture, Meniscus Repair: Indications and Technique-Invited Lecture · Course on Knee Trauma Surgery, Ribeirao Preto, Brazil (tele-presentation) · July 1-3, 2010 - Autologous Chondrocyte Implantation-Invited Lecture · Early Degenerative Arthritis of the Knee: Biological Solutions. ESSKA Cartilage Committee Consensus Meeting, Istituto Ortopedico Rizzoli, Bologna, Italy · March 10, 2011 - Chondrocytes for articular resurfacing-Invited Lecture “Do we need cells to restore the articular surface” Symposium · ISAKOS World Congress 2011, Rio de Janeiro, Brazil · May 16, 2011 - Medial Compartment Arthritis-Session Moderator · ISAKOS World Congress 2011, Rio de Janeiro, Brazil · May 18, 2011 - Advanced Techniques in Cartilage Restoration- Invited Lecture Meniscal Transplantation- Invited Lecture · V Curso Interinstitucional de Chirurgia do Joelho, University of Sao Paulo, Sao Paulo, Brazil · August 19, 2011 - Biological Surgical Repair- Invited Lecture · OARSI Congress, Barcelona, Spain · April 28, 2012 - Surgical treatment for early osteoarthritis- Invited Lecture Symposium: Biological treatment of early Osteoarthritis. · 15th ESSKA Congress, Geneva, Switzerland · May 4, 2012 - Treatment of OA-lesions-Invited Lecture Instructional course lecture: ICL 15: Cartilage committee: Algorithms and flow-charts for the treatment of cartilage pathology. · 15th ESSKA Congress, Geneva, Switzerland · May 5, 2012 - Meniscus/Session Moderator Current treatment paradigm for single stage cartilage repair – Invited Lecture · ICRS World Congress 2012, Montreal, Canada · May 12, 2012 - Joint Preservation- Invited Lecture Microfracture and AMIC versus ACI- Invited Lecture (tele-presentation) · Forum for Advanced Medical Education, St. Vinzenz-Hospital, Dinslaken, Germany · June 30, 2012 - Biological arthroplasty (for Gobbi)- Invited Lecture The use of a cartilage repair algorithm (for Mandelbaum)- Invited Lecture The importance of the subchondral bone for cartilage repair- Invited Lecture Case presentation – complex cases/Panel discussion participant · V Congreso Sociedad Latinoamericana de Artroscopia, Rodilla y Traumatologia Deportiva (SLARD) 2012, Cartagena, Colombia · October 11, 2012 - Mid and Long-Term Clinical Outcomes of Cell Therapies for Cartilage Injuries- Invited Lecture Symposium: Cartilage Repair · ISAKOS World Congress 2013, Toronto, Canada · May 12, 2013 - Advances in Cartilage Treatment- Invited Lecture Symposium · ISAKOS World Congress 2013, Toronto, Canada · May 12, 2013 - Surgical Simulation in Orthopaedic Skills Training: Arthroscopy and Beyond- Symposium Chair · ISAKOS World Congress 2013, Toronto, Canada · May 14, 2013 - High tibial osteotomy and meniscal transplantation – concurrent or staged treatment?- Invited Lecture · 1st Course on Knee Surgery, Charité University Hospital, Berlin, Germany · August 31, 2013 - Definition and epidemiology of failed cartilage repair- Invited Lecture · ICRS World Congress, Izmir, Turkey · September 16, 2013 - Why is ACI the ideal cartilage repair procedure?- Invited Lecture · 3rd Berlin Cartilage Symposium, Berlin, Germany · March 21, 2014 - Biologic knee reconstruction- Invited Lecture · Brazilian Knee Society Annual Meeting, Maceió, Brazil · April 11, 2014 - Biologic knee reconstruction- Invited Lecture · 6th Annual Meeting, JOSKAS, Hiroshima, Japan · July 24, 2014 - Do we need cartilage repair when we redistribute loads- Invited Lecture · Early Osteoarthritis – all-around biological solutions, ESSKA consensus meeting, Verona, Italy · May 22, 2015 - Cartilage repair for early arthritis- Invited lecture, ICL: Innovative treatment of cartilage lesions · ISAKOS World Congress 2015, Lyon, France · June 11, 2015 - Articular Cartilage Regeneration- Session Chair · Aarhus Regenerative Orthopaedics Symposium, Aarhus, Denmark · August 14, 2015 - The spectrum of bone issues – edema, osteonecrosis, insufficiency fracture-Invited Lecture ACI – History, outcomes, future-Invited Lecture Meniscal repair and transplantation- Invited Lecture · FEMECOT annual meeting 2015, Cancun, Mexico · October 28-30, 2015 - The US treatment algorithm for cartilage repair-Invited Lecture Clinical Outcomes of Allograft Use-Session Moderator Stem cells in clinical use-Invited Lecture · The Future of Allograft Tissue, ICRS Summit Meeting, Brussels, Belgium · January 29-30, 2016 - Valgus tibial osteotomy – surgical technique-Invited lecture Treatment algorithm for cartilage repair-Invited lecture Rehabilitation after cartilage repair-Invited lecture · ICRS World Series Conference, Sao Paulo, Brazil · June 19-20, 2016 - Overview of recent clinical studies in cartilage repai-/Invited lecture Identifying the reason for failure of cartilage repair-Invited lecture Treatment of tibiofemoral OA-Invited lecture · ICRS World Congress, Sorrento, Italy · September 24-27, 2016 - Cartilage repair algorithm-Invited lecture and congress co-director · Regenerative Therapies: Advanced Allograft Solutions for Sports Medicine and Orthopedics, Munich, Germany · October 28, 2016 - Indications for meniscal transplantation-Invited lecture Treatment algorithm for cartilage repair in the knee-Invited lecture Osteochondral vs. surface only cartilage repair-Invited lecture Osteotomy for meniscal deficiency and cartilage repair-Invited lecture · Meniscus and Cartilage Surgery, Preserving the Knee, Guadalajara, Mexico · November 24-26, 2016 - Biologic knee reconstruction-Invited lecture Novel strategies for knee OA-Invited lecture · New Horizons in Sports Medicine, Sydney, Australia · May 12, 2017 - The meniscectomized knee-Symposium organizer and faculty · ISAKOS meeting, Shanghai, China · June 4, 2017 - Microfracture plus-Invited lecture Failure of cartilage repair – ICL 302-Course moderator and faculty · AOSSM annual meeting, Toronto, Canada · July 21-23, 2017 - Risk Factors for Focal Cartilage Lesions in the Patella and Trochlea · International Patellofemoral Study Group Biannual Meeting, Munich, Germany · September 15, 2017 - How I solve chondral problems – Invited lecture · Asociación Argentina de Ortopedia y Traumatología annual meeting, Buenos Aires, Argentina · December 3, 2017 - Basic science of PRP, BMAC and stem cells – Invited lecture Particulated cartilage auto- and allograft – Invited lecture · Asociación Argentina de Ortopedia y Traumatología annual meeting, Buenos Aires, Argentina · December 5, 2017 - Treatment Algorithms & Evidence Based Evaluation of Surgical Cartilage Repair Techniques – Invited Lecture Valgus Tibial Osteotomy – Surgical Technique: Tips & Pearls – Invited Lecture · ICRS World Series, Sao Paulo, Brazil · February 7, 2019 - ACI Rehabilitation & Return to Sports- Expected Short & Long-Term Results – Invited Lecture Simple and complex chondral and osteochondral defects – Case panel member What do to with and without cells available? – Case panel member · ICRS World Series, Sao Paulo, Brazil · February 8, 2019 - Orthobiology Session – Moderator Cells in Sports Medicine – Keynote Lecture · International Knee Update, Davos, Switzerland · April 5, 2019 - PF Cartilage Disease, a comprehensive approach – Invited Lecture · International Knee Update, Davos, Switzerland · April 6, 2019 - Conference pre-course: Cartilage repair – Symposium Co-Chair · ISAKOS World Congress 2019, Cancun, Mexico · May 11, 2019 - Cartilage Repair in the Athlete – Symposium Chair · ISAKOS World Congress 2019, Cancun, Mexico · May 12, 2019 - Rescue injection of amniotic suspension allograft improves pain and function in patients with knee osteoarthritis – Podium presentation Amniotic suspension allograft for treatment of knee osteoarthritis in a randomized controlled multi-center trial – Podium presentation Effect of the Atlas Unicompartmental Knee system on Tibiofemoral joint stress during the stance phase of gait – Podium presentation Stem cells without the hype – Session moderator · ICRS World Congress, Vancouver, Canada · October 7, 2019 - ACL tear isolated cartilage lesions – Treat – Invited Lecture · ICRS World Congress, Vancouver, Canada · October 8, 2019 - Treatment algorithm for knee cartilage defects – Invited lecture (online) · Brazilian Knee Society Webinar · April 22, 2020 - Managing the patient with articular cartilage loss, malalignment and meniscal deficiency – Invited lecture · ICRS webinar · May 15, 2021 - Amniotic Suspension Allograft: Clinical Data – Invited lecture · ICRS virtual convention · June 2, 2021 - Osteochondral allograft – The Phoenix of cartilage repair – Invited lecture · ICRS World Congress, Berlin, Germany · April 14, 2022 - Patellofemoral cartilage case discussion – Panel member · IPSG meeting, Helsinki, Finland · August 5th, 2022 - Cartilage repair algorithm · Virtual Grand Rounds, Federal University of Sao Paulo, Brazil · September 1, 2022 - Meniscal deficiency and transplantation – Invited Lecture HTO contemporary technique – Invited Lecture Patellar Cartilage Repair – Invited Lecture · Ranawat Orthopaedic Conference, Mumbai, India · January 19, 2023 - Treatment algorithm for simple small cartilage defects – Invited Lecture Osteotomies – Avoiding complications – Invited Lecture · Seminar in Bone and Joint Surgery Open Medical Institute American-Austrian Foundation Salzburg, Austria · February 29, 2024 ## Bibliography 217 peer-reviewed articles, reviews, books, and book chapters. Peer-Reviewed Research Articles (102) - Gomoll A, Wanich T, Bellare A. J-integral fracture toughness and tearing modulus measurement of radiation cross-linked UHMWPE. J Orthop Res. 2002;20(6):1152-6. - Gomoll AH, Lin A, Harris MB. Incisional Vacuum-Assisted Closure Therapy. J Orthop Trauma. 2006;20(10):705-9. - Gomoll AH, Kang RW, Williams JM, Bach BR, Cole BJ. Chondrolysis after continuous intra-articular bupivacaine infusion: an experimental model investigating chondrotoxicity in the rabbit shoulder. Arthroscopy. 2006;22(8):813-9. - Cole BJ, Gomoll AH, Yanke A, Pylawka T, Lewis P, Macgillivray JD, Williams JM. Biocompatibility of a polymer patch for rotator cuff repair. Knee Surg Sports Traumatol Arthrosc. 2007;15(5):632-7. - Gomoll AH, Flik KR, Hayden JK, Cole BJ, Bush-Joseph CA, Bach BR. Internal fixation of unstable Cahill Type-2C osteochondritis dissecans lesions of the knee in adolescent patients. Orthopedics. 2007;30(6):487-90. - Gomoll AH, O'Toole RV, Czarnecki J, Warner JJ. Surgical Experience Correlates With Performance on a Virtual Reality Simulator for Shoulder Arthroscopy. Am J Sports Med. 2007;35(6):883-8. - Ellender P, Gomoll AH, Minas T. Autologous Chondrocyte Implantation for Osteochondritis Dissecans in the Knee. Oper Tech Sports Med. 2008;16(2):89-96. - Kang RW, Gomoll AH, Nho SJ, Pylawka TK, Cole BJ. Outcomes of mechanical debridement and radiofrequency ablation in the treatment of chondral defects: a prospective randomized study. J Knee Surg. 2008;21(2):116-21. - Gomoll AH, Pappas G, Forsythe B, Warner JJ. Individual skill progression on a virtual reality simulator for shoulder arthroscopy: a 3-year follow-up study. Am J Sports Med. 2008;36(6):1139-42. - Gomoll AH, Fitz W, Scott RD, Thornhill TS, Bellare A. Nanoparticulate fillers improve the mechanical strength of bone cement. Acta Orthop. 2008;79(3):421-7. - Rosenberger RE, Gomoll AH, Bryant T, Minas T. Repair of large chondral defects of the knee with autologous chondrocyte implantation in patients 45 years or older. Am J Sports Med. 2008;36(12):2336-44. - Gomoll AH, Yanke AB, Kang RW, Chubinskaya S, Williams JM, Bach BR, Cole BJ. Long-Term Effects of Bupivacaine on Cartilage in a Rabbit Shoulder Model. Am J Sports Med. 2009;37(1):72-8. - Gomoll AH, Kang RW, Chen AL, Cole BJ. Triad of cartilage restoration for unicompartmental arthritis treatment in young patients: meniscus allograft transplantation, cartilage repair and osteotomy. J Knee Surg. 2009;22(2):137-41. - Minas T, Gomoll AH, Rosenberger R, Royce RO, Bryant T. Increased failure rate of autologous chondrocyte implantation after previous treatment with marrow stimulation techniques. Am J Sports Med. 2009;37(5):902-8. - Suter L, Fraenkel L, Losina E, Katz JN, Gomoll AH, Paltiel AD. Medical decision making in patients with knee pain, meniscal tear, and osteoarthritis. Arthritis Rheum. 2009 Oct 29;61(11):1531-1538. - Gomoll AH, Probst C, Farr J, Cole BJ, Minas T. Use of a type I/III bilayer collagen membrane decreases reoperation rates for symptomatic hypertrophy after autologous chondrocyte implantation. Am J Sports Med. 2009 Nov;37 Suppl 1:20S-23S. - Minas T, Gomoll AH, Solhpour S, Rosenberger R, Probst C, Bryant T. Autologous chondrocyte implantation for joint preservation in patients with early osteoarthritis. Clin Orthop Relat Res. 2010 Jan;468(1):147-57. - Gomoll AH, Yoshioka H, Watanabe A, Dunn JC, Minas T. Preoperative Measurement of Cartilage Defects by MRI Underestimates Lesion Size. Cartilage 2011 Oct;2(4):389-93 - Zhang D, Cheriyan T, Martin SD, Gomoll AH, Schmid TM, Spector M. Lubricin distribution in the torn human anterior cruciate ligament and meniscus. J Orthop Res. 2011 Dec;29(12):1916-22 - von Keudell A, Gomoll AH, Bryant T, Minas T. Spontaneous Osteonecrosis of the Knee Treated with Autologous Chondrocyte Implantation, Autologous Bone-Grafting, and Osteotomy: A Report of Two Cases with Follow-up of Seven and Nine Years. J Bone Joint Surg Am. 2011 Dec;93(24):e1491-7 - Foldager CB, Gomoll AH, Lind M, Spector M. Cell Seeding Densities in Autologous Chondrocyte Implantation Techniques for Cartilage Repair. Cartilage 2012;3(2):108-17 - Canseco JA, Kojima K, Penvose AR, Ross JD, Obokata H, Gomoll AH, Vacanti CA. Effect on Ligament Marker Expression by Direct-Contact Co-Culture of Mesenchymal Stem Cells and Anterior Cruciate Ligament Cells. Tissue Engineering Tissue Eng Part A. 2012 Dec;18(23-24):2549-58 - von Keudell A, Canseco JA, Gomoll AH. Deleterious Effects of Diluted Povidone-Iodine on Articular Cartilage. J Arthroplasty. 2013 Jun;28(6):918-21 - Henn RF 3rd, Shah N, Warner JJ, Gomoll AH. Shoulder Arthroscopy Simulator Training Improves Shoulder Arthroscopy Performance in a Cadaveric Model. Arthroscopy. 2013 Jun;29(6):982-5 - Demange MK, Von Keudell A, Gomoll AH. Iatrogenic instability of the lateral meniscus after partial meniscectomy. Knee. 2013 Oct;20(5):360-3 - Minas T, Von Keudell A, Bryant T, Gomoll AH. The John Insall Award: A Minimum 10-year Outcome Study of Autologous Chondrocyte Implantation. Clin Orthop Relat Res. 2014 Jan;472(1):41-51. - Von Keudell A, Sodha S, Collins J, Minas T, Fitz W, Gomoll AH. Patient satisfaction after primary total and unicompartmental knee arthroplasty: an age-dependent analysis. Knee. 2014 Jan;21(1):180-4 - Song A, Katz JN, Higgins LD, Newman J, Gomoll A, Jain NB. Outcomes of Ultrasound-guided Glenohumeral Corticosteroid Injections in Adhesive Capsulitis. Br J Med Med Res. 2014 Sep 25;5(5):570-578 - Von Keudell A, Syed HM, Canseco JA, Gomoll AH. Efficacy of common surgical compounds in preventing articular chondrocyte death from desiccation. Knee Surg Sports Traumatol Arthrosc. 2015 May;23(5):1346-50 - Foldager CB, Toh WS, Gomoll AH, Olsen BR, Spector M. Distribution of Basement Membrane Molecules, Laminin and Collagen Type IV, in Normal and Degenerated Cartilage Tissues. Cartilage. 2014 Apr;5(2):123-32. - Gomoll AH, Gillogly SD, Cole BJ, Farr J, Arnold R, Hussey K, Minas T. Autologous Chondrocyte Implantation in the Patella: A Multicenter Experience. Am J Sports Med. 2014 May;42(5):1074-81 - Harris JD, Hussey K, Wilson H, Pilz K, Gupta AK, Gomoll A, Cole BJ. Biological knee reconstruction for combined malalignment, meniscal deficiency, and articular cartilage disease. Arthroscopy. 2015 Feb;31(2):275-82 - Demange M, von Keudell A, Probst C, Yoshioka H, Gomoll AH. Patient-specific implants for lateral unicompartmental knee arthroplasty. Int Orthop. 2015 Feb 3. PubMed PMID: 25645437. - Konopka JF, Gomoll AH, Thornhill TS, Katz JN, Losina E. The cost-effectiveness of surgical treatment of medial unicompartmental knee osteoarthritis in younger patients: a computer model-based evaluation. J Bone Joint Surg Am. 2015 May 20;97(10):807-17 - Schwarzkopf R, Brodsky M, Garcia GA, Gomoll AH. Surgical and Functional Outcomes in Patients Undergoing Total Knee Replacement With Patient-Specific Implants Compared With "Off-the-Shelf" Implants. Orthop J Sports Med. 2015 Jun 24;3(7): - Foldager CB, Farr J, Gomoll AH. Patients Scheduled for Chondrocyte Implantation Treatment with MACI Have Larger Defects than Those Enrolled in Clinical Trials. Cartilage. 2016 Apr;7(2):140-8.. - Foldager CB, Toh WS, Christensen BB, Lind M, Gomoll AH, Spector M. Collagen Type IV and Laminin Expressions during Cartilage Repair and in Late Clinically Failed Repair Tissues from Human Subjects. Cartilage. 2016 Jan;7(1):52-61. - Farr J, Gracitelli GC, Shah N, Chang EY, Gomoll AH. High Failure Rate of a Decellularized Osteochondral Allograft for the Treatment of Cartilage Lesions. Am J Sports Med. 2016 Aug;44(8):2015-22. - Vines JB, Aliprantis AO, Gomoll AH, Farr J. Cryopreserved Amniotic Suspension for the Treatment of Knee Osteoarthritis. J Knee Surg. 2016 Aug;29(6):443-50. doi: 10.1055/s-0035-1569481. PMID: 26683979. - Demange MK, Minas T, von Keudell A, Sodha S, Bryant T, Gomoll AH. Intralesional Osteophyte Regrowth Following Autologous Chondrocyte Implantation after Previous Treatment with Marrow Stimulation Technique. Cartilage. 2017 Apr;8(2):131-138. - Gomoll AH, Ambra LF, Phan A, Mastrocola M, Shah N. Cell-Seeded Autologous Chondrocyte Implantation: A Simplified Implantation Technique That Maintains High Clinical Outcomes. Am J Sports Med. 2017 Apr;45(5):1028-1036. - Getgood A, LaPrade RF, Verdonk P, Gersoff W, Cole B, Spalding T; IMREF Group. International Meniscus Reconstruction Experts Forum (IMREF) 2015 Consensus Statement on the Practice of Meniscal Allograft Transplantation. Am J Sports Med. 2017 May;45(5):1195-1205. doi: 10.1177/0363546516660064. PMID: 27562342. - Mandell JC, Rhodes JA, Shah N, Gaviola GC, Gomoll AH, Smith SE. Routine clinical knee MR reports: comparison of diagnostic performance at 1.5 T and 3.0 T for assessment of the articular cartilage. Skeletal Radiol. 2017 Nov;46(11):1487-1498. - Ambra LF, Phan A, Gomoll AH. A New Technique for Distalization of the Tibial Tubercle That Allows Preservation of the Proximal Buttress. Orthop J Sports Med. 2018 Sep 25;6(9):2325967118798621. doi: 10.1177/2325967118798621. eCollection 2018 Sep. PubMed PMID: 30263901; PubMed Central PMCID: PMC6156213. - Ackermann J, Ogura T, Duerr RA, Mestriner AB, Gomoll AH. Mental Health Has No Predictive Association With Self-Assessed Knee Outcome Scores in Patients After Osteochondral Allograft Transplantation of the Knee. Orthop J Sports Med. 2018 Dec 10;6(12):2325967118812363. doi: 10.1177/2325967118812363. eCollection 2018 Dec. PubMed PMID: 30560141; PubMed Central PMCID: PMC6293379. - Hussain ZB, Chahla J, Mandelbaum BR, Gomoll AH, LaPrade RF. The Role of Meniscal Tears in Spontaneous Osteonecrosis of the Knee: A Systematic Review of Suspected Etiology and a Call to Revisit Nomenclature. Am J Sports Med. 2019 Feb;47(2):501-507. doi: 10.1177/0363546517743734. PMID: 29253348. - Ambra LF, de Girolamo L, Niu W, Phan A, Spector M, Gomoll AH. No effect of topical application of tranexamic acid on articular cartilage. Knee Surg Sports Traumatol Arthrosc. 2019 Mar;27(3):931-935. doi: 10.1007/s00167-017-4746-9. PMID: 29119286 - Spitzer AI, Richmond JC, Kraus VB, Gomoll A, Jones DG, Huffman KM, Peterfy C, Cinar A, Lufkin J, Kelley SD. Safety and Efficacy of Repeat Administration of Triamcinolone Acetonide Extended-release in Osteoarthritis of the Knee: A Phase 3b, Open-label Study. Rheumatol Ther. 2019 Mar;6(1):109-124. doi: 10.1007/s40744-019-0140-z. PMID: 30741382; PMCID: PMC6393263. - Merkely G, Ogura T, Ackermann J, Barbieri Mestriner A, Gomoll AH. Clinical Outcomes after Revision of Autologous Chondrocyte Implantation to Osteochondral Allograft Transplantation for Large Chondral Defects: A Comparative Matched-Group Analysis. Cartilage. 2021 Apr;12(2):155-161. doi: 10.1177/1947603519833136. Epub 2019 Mar 22. PMID: 30897940; PMCID: PMC79703. - Ackermann J, Merkely G, Shah N, Gomoll AH. Decreased Graft Thickness Is Associated With Subchondral Cyst Formation After Osteochondral Allograft Transplantation in the Knee. Am J Sports Med. 2019 Jul;47(9):2123-2129. doi:10.1177/0363546519851098. PubMed PMID: 31169995. - Merkely G, Ogura T, Ackermann J, Mestriner AB, Minas T, Gomoll AH. Open Meniscal Allograft Transplantation With Transosseous Suture Fixation of the Meniscal Body Significantly Decreases Meniscal Extrusion Rate Compared With Arthroscopic Technique. Arthroscopy. 2019 Jun;35(6):1658-1666. doi: 10.1016/j.arthro.2018.11.063. PMID: 30979620. - Ambra LF, Hinckel BB, Arendt EA, Farr J, Gomoll AH. Anatomic Risk Factors for Focal Cartilage Lesions in the Patella and Trochlea: A Case-Control Study. Am J Sports Med. 2019 Aug;47(10):2444-2453. doi: 10.1177/0363546519859320. PubMed PMID: 31287712 - Ackermann J, Duerr RA, Barbieri Mestriner A, Shah N, Gomoll AH. Effect of Graft-Host Interference Fit on Graft Integration after Osteochondral Allograft Transplantation: A Comparative MRI Analysis of Two Instrumentation Sets. Cartilage. 2021 Dec;13(1_suppl):920S-927S. doi: 10.1177/1947603519865314. Epub 2019 Aug 2. PMID: 31375032; PMCID: PMC8808806. - Ambra LF, de Girolamo L, Gomoll AH. Pulse Lavage Fails to Significantly Reduce Bone Marrow Content in Osteochondral Allografts: A Histological and DNA Quantification Study. Am J Sports Med. 2019 Sep;47(11):2723-2728. doi:10.1177/0363546519864716. PubMed PMID: 31373832. - Ackermann J, Mestriner AB, Shah N, Gomoll AH. Effect of Autogenous Bone Marrow Aspirate Treatment on Magnetic Resonance Imaging Integration of Osteochondral Allografts in the Knee: A Matched Comparative Imaging Analysis. Arthroscopy. 2019 Aug;35(8):2436-2444 - Ambra LF, Hinckel BB, Arendt EA, Farr J, Gomoll AH. Anatomic Risk Factors for Focal Cartilage Lesions in the Patella and Trochlea: A Case-Control Study. Am J Sports Med. 2019 Aug;47(10):2444-2453. doi: 10.1177/0363546519859320. PMID: 31287712. - Hede KTC, Gomoll AH, Foldager CB. Demographics in Patients Receiving Matrix-Assisted Chondrocyte Implantation (MACI) in the Ankle. Cartilage. 2021 Dec;13(1_suppl):1331S-1336S. doi: 10.1177/1947603519870854. Epub 2019 Aug 20. PMID: 31431042; PMCID: PMC8808914.. - Ackermann J, Merkely G, Mestriner AB, Shah N, Gomoll AH. Increased Chondrocytic Gene Expression Is Associated With Improved Repair Tissue Quality and Graft Survival in Patients After Autologous Chondrocyte Implantation. Am J Sports Med. 2019 Oct;47(12):2919-2926. doi: 10.1177/0363546519868213. PMID: 31433670. - Ambra LF, Mestriner AB, Ackermann J, Phan AT, Farr J, Gomoll AH. Bone-Plug Versus Soft Tissue Fixation of Medial Meniscal Allograft Transplants: A Biomechanical Study. Am J Sports Med. 2019 Oct;47(12):2960-2965. doi:10.1177/0363546519870179. PubMed PMID: 31454255 - Ambra LF, Galvão PHSAF, Mameri ES, Farr J, Gomoll AH. Femoral Trochlear Geometry in Patients with Trochlear Dysplasia Using MRI Oblique Trochlear View. J Knee Surg. 2019 Nov 7. doi: 10.1055/s-0039-1700839. [Epub ahead of print] PubMed PMID: 31698496 - Farr J, Gomoll AH, Yanke AB, Strauss EJ, Mowry KC; ASA Study Group. A Randomized Controlled Single-Blind Study Demonstrating Superiority of Amniotic Suspension Allograft Injection Over Hyaluronic Acid and Saline Control for Modification of Knee Osteoarthritis Symptoms. J Knee Surg. 2019 Nov;32(11):1143-1154. doi: 10.1055/s-0039-1696672. Erratum in: J Knee Surg. 2019 Nov;32(11):e2. PMID: 31533151. - de Girolamo L, Morlin Ambra LF, Perucca Orfei C, McQuilling JP, Kimmerling KA, Mowry KC, Johnson KA, Phan AT, Whited JL, Gomoll AH. Treatment with Human Amniotic Suspension Allograft Improves Tendon Healing in a Rat Model of Collagenase-Induced Tendinopathy. Cells. 2019 Nov 8;8(11). pii: E1411. doi:10.3390/cells8111411. PubMed PMID: 31717431 - Ackermann J, Mestriner AB, VanArsdale C, Gomoll AH. Prior Surgery Negatively Affects Cell Culture Identity in Patients Undergoing Autologous Chondrocyte Implantation. Am J Sports Med. 2020 Mar;48(3):635-41 - Merkely G, Ackermann J, Gomoll AH. The Role of Hypertension in Cartilage Restoration: Increased Failure Rate After Autologous Chondrocyte Implantation but Not After Osteochondral Allograft Transplantation. Cartilage. 2021 Dec;13(1_suppl):1306S-1314S. doi: 10.1177/1947603519900792. Epub 2020 Jan 22. PMID: 31965812; PMCID: PMC8808780. - Fernandes TL, Cortez de SantAnna JP, Frisene I, Gazarini JP, Gomes Pinheiro CC, Gomoll AH, Lattermann C, Hernandez AJ, Franco Bueno D. Systematic Review of Human Dental Pulp Stem Cells for Cartilage Regeneration. Tissue Eng Part B Rev. 2020 Feb;26(1):1-12. doi: 10.1089/ten.TEB.2019.0140. PubMed PMID: 31744404. - Hohmann E, Angelo R, Arciero R, Bach BR, Cole B, Cote M, Farr J, Feller J, Gelbart B, Gomoll A, Imhoff A, LaPrade R, Mandelbaum BR, Marx RG, Monllau JC, Noyes F, Parker D, Rodeo S, Sgaglione N, Shea K, Shelbourne DK, Yoshiya S, Glatt V, Tetsworth K. Degenerative Meniscus Lesions: An Expert Consensus Statement Using the Modified Delphi Technique. Arthroscopy. 2020 Feb;36(2):501-512. doi: 10.1016/j.arthro.2019.08.014. Erratum in: Arthroscopy. 2020 Oct;36(10):2773. PMID: 31901384. - Andrade R, Nunes J, Hinckel BB, Gruskay J, Vasta S, Bastos R, Oliveira JM, Reis RL, Gomoll AH, Espregueira-Mendes J. Cartilage Restoration of Patellofemoral Lesions: A Systematic Review. Cartilage. 2021 Dec;13(1_suppl):57S-73S. doi: 10.1177/1947603519893076. Epub 2019 Dec 17. PMID: 31845590; PMCID: PMC8808938.. - Ambra LF, Franciozi CE, Phan A, Faloppa F, Gomoll AH. Isolated MPTL reconstruction fails to restore lateral patellar stability when compared to MPFL reconstruction. Knee Surg Sports Traumatol Arthrosc. 2021 Mar;29(3):793-799. doi: 10.1007/s00167-020-06015-3. Epub 2020 Apr 28. PMID: 32347346. - Chahla J, Hinckel BB, Yanke AB, Farr J; Metrics of Osteochondral Allografts (MOCA) Group, Bugbee WD, Carey JL, Cole BJ, Crawford DC, Fleischli JE, Getgood A, Gomoll AH, Gortz S, Gross AE, Jones DG, Krych AJ, Lattermann C, Mandelbaum BR, Mandt PR, Minas T, Mirzayan R, Mologne TS, Polousky JD, Provencher MT, Rodeo SA, Safir O, Sherman SL, Strauss ED, Strickland SM, Wahl CJ, Williams RJ 3rd. An Expert Consensus Statement on the Management of Large Chondral and Osteochondral Defects in the Patellofemoral Joint. Orthop J Sports Med. 2020 Mar 26;8(3):2325967120907343. doi: 10.1177/2325967120907343. eCollection 2020 Mar. PubMed PMID: 32258181; PubMed Central PMCID: PMC7099674. - Kimmerling KA, Gomoll AH, Farr J, Mowry KC. Amniotic Suspension Allograft Modulates Inflammation in a Rat Pain Model of Osteoarthritis. J Orthop Res. 2020 May;38(5):1141-1149. doi: 10.1002/jor.24559. PMID: 31814175; PMCID: PMC7187262. - Ackermann J, Ogura T, Duerr RA, Barbieri Mestriner A, Gomoll AH. Preoperative Mental Health Has a Stronger Association with Baseline Self-Assessed Knee Scores than Defect Morphology in Patients Undergoing Cartilage Repair. Cartilage. 2020 Jul;11(3):309-315. doi: 10.1177/1947603518783484. PMID: 29972067; PMCID: PMC7298602. - Ackermann J, Mestriner AB, Merkely G, Ambra FML, Gomoll AH. Femoral interference screw insertion significantly increases graft tension in medial patellofemoral ligament reconstruction. Knee Surg Sports Traumatol Arthrosc. 2021 Sep;29(9):2851-2856 - Ackermann J, Merkely G, Arango D, Mestriner AB, Gomoll AH. The Effect of Mechanical Leg Alignment on Cartilage Restoration With and Without Concomitant High Tibial Osteotomy. Arthroscopy. 2020 Aug;36(8):2204-2214. doi: 10.1016/j.arthro.2020.04.019. PMID: 32353621. - Merkely G, Ackermann J, Farina EM, VanArsdale C, Lattermann C, Gomoll AH. Shorter Storage Time Is Strongly Associated With Improved Graft Survivorship at 5 Years After Osteochondral Allograft Transplantation [published online ahead of print, 2020 Sep 17]. Am J Sports Med. 2020;363546520956311. doi:10.1177/0363546520956311 - Ackermann J, Barbieri Mestriner A, Arango D, Ogura T, Gomoll AH. Validation of the Oswestry Risk of Knee Arthroplasty Index (ORKA-1) for Patients Undergoing Autologous Chondrocyte Implantation. Cartilage. 2020 Oct;11(4):405-411. doi: 10.1177/1947603518796146. PMID: 30146892; PMCID: PMC7488946. - Ogura T, Ackermann J, Barbieri Mestriner A, Merkely G, Gomoll AH. Minimal Clinically Important Differences and Substantial Clinical Benefit in Patient-Reported Outcome Measures after Autologous Chondrocyte Implantation. Cartilage. 2020 Oct;11(4):412-422. doi: 10.1177/1947603518799839. PMID: 30221977; PMCID: PMC7488950. - Ambra LF, Kaleka CC, Debieux P, Almeida JC, Shah N, Cohen M, Gomoll A. Radiographic Methods Are as Accurate as Magnetic Resonance Imaging for Graft Sizing Before Lateral Meniscal Transplantation. Am J Sports Med. 2020 Dec;48(14):3534-3540. - Barbieri Mestriner A, Ackermann J, Morlin Ambra LF, Franciozi CE, Faloppa F, Gomoll AH. Trochlear Dysplasia Does Not Affect the Outcomes of Patellofemoral Autologous Chondrocyte Implantation. Arthroscopy. 2020 Dec;36(12):3019-3027. doi: 10.1016/j.arthro.2020.07.012. PMID: 32679292. - Merkely G, Ackermann J, Sheehy E, Gomoll AH. Does Flipping the Tubercle for Improved Cartilage Repair Exposure Increase the Risk for Arthrofibrosis? Cartilage. 2021 Dec;13(1_suppl):311S-317S. doi: 10.1177/1947603520968209. Epub 2020 Oct 23. PMID: 33095040; PMCID: PMC8808929.. - Merkely G, Minas T, Ogura T, Ackermann J, Barbieri Mestriner A, Gomoll AH. Safety, Feasibility, and Radiographic Outcomes of the Anterior Meniscal Takedown Technique to Approach Chondral Defects on the Tibia and Posterior Femoral Condyle: A Matched Control Study. Cartilage. 2021 Jan;12(1):62-69. doi: 10.1177/1947603518809409. PMID: 30380907; PMCID: PMC7755970. - Ogura T, Ackermann J, Mestriner AB, Merkely G, Gomoll AH. The Minimal Clinically Important Difference and Substantial Clinical Benefit in the Patient-Reported Outcome Measures of Patients Undergoing Osteochondral Allograft Transplantation in the Knee. Cartilage. 2021 Jan;12(1):42-50. doi: 10.1177/1947603518812552. PMID: 30463426; PMCID: PMC7755969. - Hinckel BB, Thomas D, Vellios EE, Hancock KJ, Calcei JG, Sherman SL, Eliasberg CD, Fernandes TL, Farr J, Lattermann C, Gomoll AH. Algorithm for Treatment of Focal Cartilage Defects of the Knee: Classic and New Procedures. Cartilage. 2021 Mar 20:1947603521993219. doi: 10.1177/1947603521993219. Epub ahead of print. PMID: 33745340. - Gomoll AH, Farr J, Cole BJ, Flanigan DC, Lattermann C, Mandelbaum BR, Strickland SM, Zaslav KR, Kimmerling KA, Mowry KC. Safety and Efficacy of an Amniotic Suspension Allograft Injection over 12 Months in a Single-Blinded, Randomized Controlled Trial for Symptomatic Osteoarthritis of the Knee. Arthroscopy. 2021 2021 Jul;37(7):2246-2257. - Zaslav KR, Farr J, Alfred R, Alley RM, Dyle M, Gomoll AH, Lattermann C, McKeon BP, Kaeding CC, Giel T, Hershman EB. Treatment of post-meniscectomy knee symptoms with medial meniscus replacement results in greater pain reduction and functional improvement than non-surgical care. Knee Surg Sports Traumatol Arthrosc. 2021 Apr 21. doi: 10.1007/s00167-021-06573-0. Epub ahead of print. PMID: 33884442. - Görtz S, Tabbaa SM, Jones DG, Polousky JD, Crawford DC; MOCA Committee, Bugbee WD, Cole BJ, Farr J, Fleischli JE, Getgood A, Gomoll AH, Gross AE, Krych AJ, Lattermann C, Mandelbaum BR, Mandt PR, Mirzayan R, Mologne TS, Provencher MT, Rodeo SA, Safir O, Strauss ED, Wahl CJ, Williams RJ, Yanke AB. Metrics of OsteoChondral Allografts (MOCA) Group Consensus Statements on the Use of Viable Osteochondral Allograft. Orthop J Sports Med. 2021 Mar 23;9(3):2325967120983604. doi: 10.1177/2325967120983604. PMID: 34250153; PMCID: PMC8237219. - Mestriner AB, Ackermann J, Merkely G, Galvão PHSAF, Ambra LFM, Gomoll AH. Etiology of Cartilage Lesions Does Not Affect Clinical Outcomes of Patellofemoral Autologous Chondrocyte Implantation. Cartilage. 2021 Dec;13(1_suppl):1298S-1305S. doi: 10.1177/19476035211030991. Epub 2021 Jul 21. PMID: 34286619; PMCID: PMC8808922. - Frank RM, Sherman SL, Chahla J, Dragoo JL, Mandelbaum B; Members of the Biologic Association, Anz AW, Bradley JP, Chu CR, Cole BJ, Farr J, Flanigan DC, Gomoll AH, Halbrecht J, Horsch K, Lattermann C, Leucht P, Maloney WJ, McIntyre LF, Murray I, Muschler GF, Nakamura N, Piuzzi NS, Rodeo SA, Saris DBF, Shaffer WO, Shapiro SA, Spindler KP, Steinwachs M, Tokish JM, Vangsness CT, Watson JT, Yanke AB, Zaslav KR. Biologic Association Annual Summit: 2020 Report. Orthop J Sports Med. 2021 Jun 7;9(6):23259671211015667. doi: 10.1177/23259671211015667. PMID: 34164559; PMCID: PMC8191082. - Dawkins BJ, Shubin Stein BE, Mintz DN, Fabricant PD, Gomoll AH, Strickland SM, Aitchison AH, Hidalgo Perea S, Green DW. Patellofemoral joint cartilage restoration with particulated juvenile allograft in patients under 21 years old. Knee. 2021 Aug 7:S0968-0160(21)00172-1. doi: 10.1016/j.knee.2021.07.006. Epub ahead of print. PMID: 34376348. - Langhans MT, Strickland SM, Gomoll AH. Management of Chondral Defects Associated with Patella Instability. Clin Sports Med. 2022 Jan;41(1):137-155. doi: 10.1016/j.csm.2021.07.005. PMID: 34782070 - Merkely G, Farina EM, Leite CBG, Ackermann J, Görtz S, Lattermann C, Gomoll AH. Association of Sex Mismatch Between Donor and Recipient With Graft Survivorship at 5 Years After Osteochondral Allograft Transplantation. Am J Sports Med. 2022 Mar;50(3):681-688. doi: 10.1177/03635465211068872. Epub 2022 Jan 19. PMID: 35044257.. - Kimmerling KA, Gomoll AH, Farr J, Mowry KC. Amniotic suspension allograft improves pain and function in a rat meniscal tear-induced osteoarthritis model. Arthritis Res Ther. 2022 Mar 4;24(1):63. doi: 10.1186/s13075-022-02750-9. PMID: 35246217 - Suh K, Cole BJ, Gomoll A, Lee SM, Choi H, Ha CW, Lim HC, Kim MK, Ha GY, Suh DC. Cost Effectiveness of Allogeneic Umbilical Cord Blood-Derived Mesenchymal Stem Cells in Patients with Knee Osteoarthritis. Appl Health Econ Health Policy. 2022 Sep 22. doi: 10.1007/s40258-022-00762-9. Epub ahead of print. PMID: 36136263. - Merkely G, Leite CBG, Farina EM, Gomoll AH, Lattermann C. Harvest Technique Does Affect the Quality of Osteochondral Grafts: Histologic Evaluation Comparing Commercial Standards versus Scalpel Blade Technique. Cartilage. 2022 Dec 9:19476035221141420. doi: 10.1177/19476035221141420. Epub ahead of print. PMID: 36484337. - Murray IR, Chahla J, Wordie SJ, Shapiro SA, Piuzzi NS, Frank RM, Halbrecht J, Okada K, Nakamura N, Mandelbaum B, Dragoo JL; Biologics Association, Borg-Stein J, Anz A, Gobbi A, Gomoll AH, Cole BJ, Lattermann C, Chu C, Grande DA, Saris DBF, Flanigan D, Kon E, Muschler GF, Malanga GA, Dummer G, Farr J, Tokish JM, Spindler KP, Horsch K, Zaslav K, McIntyre LF, Sgaglione NA, Sherman SL, Rodeo S, Awan TM, Vangsness CT. Regulatory and Ethical Aspects of Orthobiologic Therapies. Orthop J Sports Med. 2022 Nov 30;10(11):23259671221101626. doi: 10.1177/23259671221101626. PMID: 36479465; PMCID: PMC9720812. - Lamplot JD, Jahandar A, Meyers KN, Gomoll AH, Maher SA, Strickland SM. Anteromedialization Tibial Tubercle Osteotomy Improves Patellar Contact Forces: A Cadaveric Model of Patellofemoral Dysplasia. Am J Sports Med. 2023 Feb;51(2):453-460. doi: 10.1177/03635465221138287. Epub 2022 Dec 1. PMID: 36453729. - Gomoll AH, Mandelbaum BR, Farr J, Archambault WT, Sherman SL, Tabet SK, Kimmerling KA, Mowry KC. An Initial Injection and a Crossover Injection of Amniotic Suspension Allograft Following Failed Treatment with Hyaluronic Acid or Saline Are Equally Effective in the Treatment of Moderate Symptomatic Knee Osteoarthritis Over 12 Months. Arthroscopy. 2023 Jan;39(1):66-78. doi: 10.1016/j.arthro.2022.06.036. Epub 2022 Jul 14. PMID: 35840067. - Suh K, Cole BJ, Gomoll A, Lee SM, Choi H, Ha CW, Lim HC, Kim MK, Ha GY, Suh DC. Cost Effectiveness of Allogeneic Umbilical Cord Blood-Derived Mesenchymal Stem Cells in Patients with Knee Osteoarthritis. Appl Health Econ Health Policy. 2023 Jan;21(1):141-152. doi: 10.1007/s40258-022-00762-9. Epub 2022 Sep 22. Erratum in: Appl Health Econ Health Policy. 2022 Oct 21;: PMID: 36136263; PMCID: PMC9834379. - Tabbaa SM, Bugbee WD, Provencher M, Farr J, Crawford DC; on behalf of the Metrics of Osteochondral Allografts (MOCA) Committee. Inconsistent Reporting of Preauthorization Medical Criteria for Osteochondral Allograft Transplantation Surgery. J Bone Joint Surg Am. 2022 Oct 19;104(20):1841-1853. doi: 10.2106/JBJS.21.01191. Epub 2022 Aug 18. PMID: 35984006. - Gomoll AH, Diduch DR, Flanigan DC, Ranawat AS, Slynarski K, Walawski J, Crawford DC. An implantable shock absorber yields an 85% survival-from- arthroplasty rate through 5 years in working-age patients with medial compartment knee osteoarthritis. Knee Surg Sports Traumatol Arthrosc. 2023 Mar 23. doi: 10.1007/s00167-023-07373-4. Epub ahead of print. PMID: 36951981. - Kunze KN, Palhares G, Uppstrom TJ, Hinkley P, Rizy M, Gomoll AH, Stein BES, Strickland SM. Establishing minimal detectable change thresholds for the international knee documentation committee and Kujala scores at one and two years after patellofemoral joint arthroplasty. Knee Surg Sports Traumatol Arthrosc. 2023 Mar 23. doi: 10.1007/s00167-023-07341-y. Epub ahead of print. PMID: 36951980. - Altschuler N, Zaslav KR, Di Matteo B, Sherman SL, Gomoll AH, Hacker SA, Verdonk P, Dulic O, Patrascu JM, Levy AS, Robinson D, Kon E. Aragonite-Based Scaffold Versus Microfracture and Debridement for the Treatment of Knee Chondral and Osteochondral Lesions: Results of a Multicenter Randomized Controlled Trial. Am J Sports Med. 2023 Mar;51(4):957-967. doi: 10.1177/03635465231151252. Epub 2023 Feb 13. PMID: 36779614. - Pareek A, Parkes CW, Gomoll AH, Krych AJ. Improved 2-Year Freedom from Arthroplasty in Patients with High-Risk SIFK Scores and Medial Knee Osteoarthritis Treated with an Implantable Shock Absorber versus Non-Operative Care. Cartilage. 2023 Jun;14(2):164-171. doi: 10.1177/19476035231154513. Epub 2023 Mar 9. PMID: 37198901 Reviews & Editorials (49) - Gomoll AH, Katz JN, Warner JJ, Millett PJ. Rotator cuff disorders: recognition and management among patients with shoulder pain. Arthritis Rheum. 2004;50(12):3751-61. - Gomoll AH, Thornhill TS. Image catalogs. Clin Orthop Relat Res. 2004;(421):29-34. - Gomoll AH, Bach BR. Managing Tunnel Malposition and Widening in Revision Anterior Cruciate Ligament Surgery. Oper Tech Sports Med. 2006;(14):36-44. - Gomoll AH, McCulloch P, Kang RW, Cole BJ. Treatment of chondral defects in the shoulder. Oper Tech Orthop. 2006;16(4):232-43. - Gomoll AH, Minas T, Farr J, Cole BJ. Treatment of chondral defects in the patellofemoral joint. J Knee Surg. 2006;19(4):285-95. - Gomoll AH. Childhood Leukemia Presenting as Sternal Osteomyelitis. Am J Orthop. 2007;36(10):E148-E150 - Katz JN, Gomoll AH. Advances in arthroscopic surgery: indications and outcomes. Curr Opin Rheumatol. 2007;19(2):106-10. - Gomoll AH, Minas T. Indications and Technique of Autologous Chondrocyte Transplantation. Seminars in Arthroplasty. 2007;18(2):129-39. - Katz JN, Earp BE, Gomoll AH. Surgical management of osteoarthritis. Arthritis Care Res (Hoboken). 2010 Sep;62(9):1220-8. - Gomoll AH, Madry H, Knutsen G, van Dijk N, Seil R, Brittberg M, Kon E. The subchondral bone in articular cartilage repair: current problems in the surgical management. Knee Surg Sports Traumatol Arthrosc. 2010 Apr;18(4):434-47. - Gomoll AH. Meniscus Allograft Transplantation. Minerva Orthopedica E Traumatologica. 2010 Aug;61(4):325-31 - Gomoll AH, Farr J, Gillogly SD, Kercher J, Minas T. Surgical management of articular cartilage defects of the knee. J Bone Joint Surg Am. 2010 Oct;92(14):2470-90. - Henn RF, Gomoll AH. A review of the evaluation and management of cartilage defects in the knee. Phys Sportsmed. 2011 Feb;39(1):101-7 - Gomoll AH. High tibial osteotomy for the treatment of unicompartmental knee osteoarthritis: a review of the literature, indications, and technique. Phys Sportsmed. 2011 Oct;39(3):45-54 - Gomoll AH, Filardo G, de Girolamo L, Espregueira-Mendes J, Marcacci M, Rodkey WG, Steadman JR, Zaffagnini S, Kon E. Surgical treatment for early osteoarthritis. Part I: cartilage repair procedures. Knee Surg Sports Traumatol Arthrosc. 2012;20(3):450-66 - Gomoll AH, Filardo G, Almqvist FK, Bugbee WD, Jelic M, Monllau JC, Puddu G, Rodkey WG, Verdonk P, Verdonk R, Zaffagnini S, Marcacci M. Surgical treatment for early osteoarthritis. Part II: allografts and concurrent procedures. Knee Surg Sports Traumatol Arthrosc. 2012;20(3):468-86 - Heijink A, Gomoll AH, Madry H, Drobnič M, Filardo G, Espregueira-Mendes J, Van Dijk CN. Biomechanical considerations in the pathogenesis of osteoarthritis of the knee. Knee Surg Sports Traumatol Arthrosc. 2012 Mar;20(3):423-35 - Gomoll AH. Microfracture and Augments. J Knee Surg 2012;25(1):9-15 - Demange M, Gomoll AH. The Use of Osteochondral Allografts in the Management of Cartilage Defects. Curr Rev Musculoskelet Med 2012;5(3):229-35 - Gomoll AH. Osteochondral allograft transplantation using the Chondrofix implant. Oper Tech Sports Med 2013 June;21(2):90-95 - Gomoll AH, Minas T. The quality of healing: articular cartilage. Wound Repair Regen. 2014 May;22 Suppl 1:30-8. - Makris EA, Gomoll AH, Malizos KN, Hu JC, Athanasiou KA. Repair and tissue engineering techniques for articular cartilage. Nat Rev Rheumatol. 2015 Jan;11(1):21-34. - Gomoll AH, Kamei G, Ochi M, Shetty AA, Zaslav K. Technical Enhancements and Update on Chondrocyte Implantation. Operative Techniques in Orthopaedics. 2014 Mar;24(1):35-47 - Gomoll AH, Farr J, Hinckel B. Patellofemoral Osteochondral Allograft Transplantation: Operative Techniques in Sports Medicine 2015 June; 23(2):90-94 - Angele P, Niemeyer P, Steinwachs M, Filardo G, Gomoll AH, Kon E, Zellner J, Madry H. Chondral and osteochondral operative treatment in early osteoarthritis. Knee Surg Sports Traumatol Arthrosc. 2016 Jun;24(6):1743-52. doi: 10.1007/s00167-016-4047-8. PMID: 26922057. - Gomoll AH, Angele P, Condello V, Madonna V, Madry H, Randelli P, Shabshin N, Verdonk P, Verdonk R. Load distribution in early osteoarthritis. Knee Surg Sports Traumatol Arthrosc. 2016 Jun;24(6):1815-25. - Lyman S, Nakamura N, Cole BJ, Erggelet C, Gomoll AH, Farr J 2nd. Cartilage-Repair Innovation at a Standstill: Methodologic and Regulatory Pathways to Breaking Free. J Bone Joint Surg Am. 2016 Aug 3;98(15):e63. - Farr J, Gomoll AH. 2016 barriers to cartilage restoration. J Clin Orthop Trauma. 2016 Jul-Sep;7(3):183-6 - Toh WS, Brittberg M, Farr J, Foldager CB, Gomoll AH, Hui JH, Richardson JB, Roberts S, Spector M. Cellular senescence in aging and osteoarthritis. Acta Orthop. 2016 Dec;87(sup363):6-14 - Brittberg M, Gomoll AH, Canseco JA, Far J, Lind M, Hui J. Cartilage repair in the degenerative ageing knee. Acta Orthop. 2016 Dec;87(sup363):26-38. - Foldager CB, Bendtsen M, Berg LC, Brinchmann JE, Brittberg M, Bunger C, Canseco J, Chen L, Christensen BB, Colombier P, Deleuran BW, Edwards J, Elmengaard B, Farr J, Gatenholm B, Gomoll AH, Hui JH, Jakobsen RB, Joergensen NL, Kassem M, Koch T, Kold S, Krogsgaard MR, Lauridsen H, Le D, Le Visage C, Lind M, Nygaard JV, Olesen ML, Pedersen M, Rathcke M, Richardson JB, Roberts S, Rölfing JH, Sakai D, Toh WS, Urban J, Spector M. Aarhus Regenerative Orthopaedics Symposium (AROS). Acta Orthop. 2017 Mar 8:1-5 - Mosier BA, Arendt EA, Dahm DL, Dejour D, Gomoll AH. Management of Patellofemoral Arthritis: From Cartilage Restoration to Arthroplasty. Instr Course Lect. 2017 Feb 15;66:531-542 - Chilelli BJ, Cole BJ, Farr J, Lattermann C, Gomoll AH. The Four Most Common Types of Knee Cartilage Damage Encountered in Practice: How and Why Orthopaedic Surgeons Manage Them. Instr Course Lect. 2017 Feb 15;66:507-530 - Ambra LF, de Girolamo L, Mosier B, Gomoll AH. Review: Interventions for Cartilage Disease: Current State-of-the-Art and Emerging Technologies. Arthritis Rheumatol. 2017 Jul;69(7):1363-1373. doi: 10.1002/art.40094. PMID: 28294573. - Hinckel BB, Gomoll AH. Autologous Chondrocytes and Next-Generation Matrix-Based Autologous Chondrocyte Implantation. Clin Sports Med. 2017 Jul;36(3):525-548 - Hinckel BB, Gomoll AH, Farr J 2nd. Cartilage Restoration in the Patellofemoral Joint. Am J Orthop. 2017 Sept/Oct;46(5):217-222. - Frank RM, Cotter EJ, Strauss EJ, Gomoll AH, Cole BJ. The Utility of Biologics, Osteotomy, and Cartilage Restoration in the Knee. J Am Acad Orthop Surg. 2018 Jan;26(1):e11-e25 - Hinckel BB, Gomoll AH. Patellofemoral Cartilage Restoration: Indications, Techniques, and Outcomes of Autologous Chondrocytes Implantation, Matrix-Induced Chondrocyte Implantation, and Particulated Juvenile Allograft Cartilage. J Knee Surg. 2018 Mar;31(3):212-226. - Mestriner AB, Ackermann J, Gomoll AH. Patellofemoral Cartilage Repair. Curr Rev Musculoskelet Med. 2018 Jun;11(2):188-200 - Duerr RA, Ackermann J, Gomoll AH. Amniotic-Derived Treatments and Formulations. Clin Sports Med. 2019 Jan;38(1):45-59. doi: 10.1016/j.csm.2018.08.002. Review. PubMed PMID: 30466722. - Fernandes TL, Kimura HA, Pinheiro CCG, Shimomura K, Nakamura N, Ferreira JR, Gomoll AH, Hernandez AJ, Bueno DF. Human Synovial Mesenchymal Stem Cells Good Manufacturing Practices for Articular Cartilage Regeneration. Tissue Eng Part C Methods. 2018 Dec;24(12):709-716. doi: 10.1089/ten.TEC.2018.0219. PMID: 30412046; PMCID: PMC6306653. - Liu JN, Agarwalla A, Gomoll AH. High Tibial Osteotomy and Medial Meniscus Transplant. Clin Sports Med. 2019 Jul;38(3):401-416. doi: 10.1016/j.csm.2019.02.006. Review. PubMed PMID: 31079771 - Gruskay JA, Strickland SM, Casey E, Chiaia TA, Green DW, Gomoll AH. Team Approach: Patellofemoral Instability in the Skeletally Immature. JBJS Rev. 2019 Jul;7(7):e10. doi: 10.2106/JBJS.RVW.18.00159. PubMed PMID: 31365447 - Spang RC 3rd, Getgood A, Strickland SM, Amendola AN, Gomoll AH. Optimizing Anterior Cruciate Ligament (ACL) Outcomes: What Else Needs Fixing Besides the ACL? Instr Course Lect. 2020;69:653-660. PubMed PMID: 32017758. - Gruskay JA, Gomoll AH, Arendt EA, Dejour DH, Strickland SM. Patellar Instability and Dislocation: Optimizing Surgical Treatment and How to Avoid Complications. Instr Course Lect. 2020;69:671-692. PubMed PMID: 32017760. - Fernandes TL, Gomoll AH, Lattermann C, Hernandez AJ, Bueno DF, Amano MT. Macrophage: A Potential Target on Cartilage Regeneration. Front Immunol. 2020 Feb 11;11:111. doi: 10.3389/fimmu.2020.00111. eCollection 2020. Review. PubMed PMID:32117263; PubMed Central PMCID: PMC7026000. - Otlans P, Lattermann C, Sherman SL, Gomoll AH, Lonner JH, Freedman KB. Cartilage Disease of the Patellofemoral Joint: Realignment, Restoration, Replacement. Instr Course Lect. 2021;70:289-308. PMID: 33438917. - Apostolakos JM, Gomoll AH, Mandelbaum BR, Sherman SL, Strickland SM. How to Address the Medial Patellofemoral Ligament, Tibial Tubercle, and Articular Cartilage in Patients With Recurrent Patellar Instability. Instr Course Lect. 2021;70:273-288. PMID: 33438916. - Hinckel BB, Thomas D, Vellios EE, Hancock KJ, Calcei JG, Sherman SL, Eliasberg CD, Fernandes TL, Farr J, Lattermann C, Gomoll AH. Algorithm for Treatment of Focal Cartilage Defects of the Knee: Classic and New Procedures. Cartilage. 2021 Dec;13(1_suppl):473S-495S. doi: 10.1177/1947603521993219. Epub 2021 Mar 20. PMID: 33745340; PMCID: PMC8808924. Books (7) - Cole BJ, Sekiya J (Eds.); Gomoll AH, Rihn J (Co-Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. Philadelphia, PA: Saunders - Elsevier; 2008. - Cole BJ, Gomoll AH (Eds.): Biologic Joint Reconstruction: Alternatives to Arthroplasty. Thorofare, NJ: SLACK Inc.;2009. - Cole BJ, Gomoll AH (Eds.): Complications in Orthopaedics – Cartilage Repair. Rosemont, IL: AAOS;2011. - Farr J, Gomoll AH (Eds.): Cartilage Restoration: Practical Clinical Application. New York, NY: Springer;2013. - Amendola N, Gomoll AH (Eds.). Let’s discuss – Joint preservation of the knee. Rosemont, IL: AAOS; 2015 - Farr J, Gomoll AH (Eds.): Cartilage Restoration: Practical Clinical Application, 2nd Edition. New York, NY: Springer; 2018 - Krych AJ, Biant LC, Gomoll AH, Nakamura N (eds.) Cartilage Injury of the Knee: State-of-the-Art Treatment and Controversies. Springer 2021 Book Chapters (52) - Metak G, Gomoll A, Wolter W, Barth G, Ascherl R. [Interspecies comparison of healing standardized bone defects with and without autogenous bone transplantation]. In: Langenbecks Arch Chir Suppl Kongressbd; 1998; Berlin, Germany. Berlin, Germany: Springer;1998. p. 25-30. - Gomoll AH, Bellare A, Fitz W, Thornhill TS, Scott RD, Jemian PR, Long GG. A nano-composite poly(methyl-methacrylate) bone cement. In: Komarneni S, Parker JC, Hahn H. Nanophase and Nanocomposite Materials III; 11/27 - 12/01/2000; Boston, MA. Warrendale, PA: Materials Research Society;2000. p. 399-404. - Gomoll AH, Wanich T, Bellare A. Fracture Toughness of UHMWPE used in Orthopaedic Implants. In: 2000; Cambridge, UK. London, UK: The Institute of Materials; 2000. p. 254-257. - Gomoll AH, Bellare A, Fitz W, Scott RD, Thornhill TS. Toughness of Poly (Methyl Methacrylate) Bone Cement containing Particulate Fillers. In: 2000; Cambridge, UK. London, UK: The Institute of Materials; 2000. p. 168-171. - Gomoll AH, Schai PA, Scott RD, Thornhill TS. Total Knee Arthroplasty with the PFC System - Minimum 10 Year Results and Survivorship Analysis: Considerations for the Future. In: Eulert J, Hassenpflug J (Eds.): Knee Endoprostheses [Praxis der Knieendoprothetik]. Berlin: Springer;2001. p. 233-246. - Gomoll AH, Hatch GF, Millett PJ. Shoulder Injuries in Throwing Athletes. In: Schepsis AA, Busconi BD (Eds.): Orthopaedic Surgery Essentials: Sports Medicine. New York, NY: Lippincott Williams & Wilkins;2005. p. 200-13. - Minas T, Gomoll AH. New Frontiers in Surgery of Osteoarthritis. In: Moskowitz RW, Altman RD, Hochberg MC, Buckwalter JA, Goldberg VM (Eds.): Osteoarthritis: Diagnosis and Medical/Surgical Management. Philadelphia, PA: LW&W;2007. p. 453-9. - Gomoll AH, Cole BJ. Pectoralis Major Transfer for Scapular Winging. In: Zuckerman JD (Ed.): Advanced Reconstruction: Shoulder. Rosemont, IL: AAOS/ASES;2007. p. 439-445. - Romeo AA, Creighton A, Gomoll AH. Revision Arthroplasty/Revision of Loose Humeral Component. In: Zuckerman JD (Ed.): Advanced Reconstruction: Shoulder. Rosemont, IL: AAOS/ASES;2007. p. 597-604. - Gomoll AH, Cole BJ. Arthroscopic Rotator Interval Closure. In: Levine WN, Blaine TA, Ahmad CS (Eds.): Minimally Invasive Shoulder & Elbow Surgery. New York, NY: Informa Healthcare;2007. p. 133-138. - Flik KR, Gomoll AH, Cole BJ. Rotator Cuff Tear: Arthroscopic Treatment. In: Berry DJ, Steinmann SP (Eds.): Orthopaedic Surgery Essentials: Adult Reconstruction. New York, NY: Lippincott Williams & Wilkins;2007. p. 277-83. - Gomoll AH, Romeo AA. Suprascapular Nerve Decompression. In: Wiesel S (Ed.): Operative Techniques in Orthopaedic Surgery. Lippincott Williams & Wilkins;2008. - Gomoll AH, Farr J, Cole BJ. Allograft Meniscus Transplantation: Bridge in Slot Technique. In: Cole BJ, Sekiya J (Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. Philadelphia, PA: Saunders-Elsevier;2008. p. 459-470. - Gomoll AH, Cole BJ. Arthroscopic Rotator Cuff Repair: Single-Row Technique. In: Cole BJ, Sekiya J (Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. Philadelphia, PA: Saunders-Elsevier;2008. p. 157-168. - Kang RW, Gomoll AH, Cole BJ. Osteochondral Allografting in the Knee. In: Cole BJ, Sekiya J (Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. Philadelphia, PA: Saunders-Elsevier;2008. p. 549-558. - Gomoll AH, Cole BJ, Farr J, Gillogly SD, Steadman R. Roundtable discussion: Cartilage Repair. Orthopedics today. 2008;28(9):46-53. - Gomoll AH, Cole BJ. Articular Cartilage Lesions. In: DeLee JC, Drez D, Miller MD (Eds.): DeLee & Drez's Orthopaedic Sports Medicine. 3rd Ed. Pittsburgh, PA: Elsevier;2009. - Gomoll AH, Cole BJ. Biologic Joint Resurfacing: Cartilage repair, meniscal transplantation and osteotomy. In: Cole BJ, Gomoll AH (Eds.): Biologic Joint Reconstruction. Alternatives to Arthroplasty. Thorofare, NJ: SLACK Inc:2009. - Gomoll AH, Farr J. Emerging Technologies for Cartilage Repair. In: Cole BJ, Gomoll AH (Eds.): Biologic Joint Reconstruction. Alternatives to Arthroplasty. Thorofare, NJ: SLACK Inc 2009. - Gomoll AH, Cole BJ. Meniscal Transplantation. In: Cole BJ, Gomoll AH (Eds.): Biologic Joint Reconstruction. Alternatives to Arthroplasty. Thorofare, NJ: SLACK Inc 2009. - Gomoll AH, Farr J. Future Directions of Cartilage Repair. In: Cole BJ (Ed.): Surgical Management of Articular Cartilage Defects in the Knee. Rosemont, IL: AAOS;2009. - Minas T, Gomoll AH. What is the best treatment for chondral defects in the knee? In: Wright JG (Ed.): Evidence-Based Orthopaedics. Philadelphia, PA: Elsevier;2009. - Gomoll AH. Editorial: Serum levels of hyaluronic acid and chondroitin sulfate as a non-invasive method to evaluate healing after cartilage repair procedures. Arthritis Res Ther 2009; 11(4):118 - Gomoll AH, DiNubile: ACI in the Mature Athlete. In: Hawkins RJ, Chen AL (Eds.): The Care of the Mature Athlete. Rosemont, IL: AAOS;2010. - Gomoll AH: Complications after ACI. In: Cole BJ, Gomoll AH (Eds.): Complications in Orthopaedics – Cartilage Repair. Rosemont, IL: AAOS;2010. - Farr J, Gomoll AH: Membranes used for cartilage repair. In: Scott W (Ed.): Insall & Scott - Surgery of the Knee, 5th Ed. Philadelphia, PA: Elsevier;2010. - Gomoll AH, Minas T: Autologous Chondrocyte Implantation. In: Lieberman JR, Berry DJ, Azar F (Eds): Advanced Reconstruction – Knee. Rosemont, IL: AAOS;2010. - Gonzalez C, Fitz W, Gomoll AH: ACL reconstruction with unicompartmental knee replacement. In: Scott W (Ed.): Insall & Scott - Surgery of the Knee, 5th Ed. Philadelphia, PA: Elsevier;2010. - Gomoll AH, Minas T: Meniscal allograft Transplantation. In: Minas T (Ed.): A primer in cartilage repair and joint preservation of the knee. Philadelphia, PA: Elsevier:2011 - Gomoll AH, Minas T: Debridement, Microfracture and Osteochondral Autograft Transfer. In: Minas T (Ed.): A primer in cartilage repair and joint preservation of the knee. Philadelphia, PA: Elsevier:2011 - Gomoll AH, Farr J, Cole BJ. Allograft Meniscus Transplantation: Bridge in Slot Technique. In: Cole BJ, Sekiya J (Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. 2nd Edition. Philadelphia, PA: Saunders-Elsevier;2013 - Gomoll AH, Kang RW, Cole BJ. Osteochondral Allografting in the Knee. In: Cole BJ, Sekiya J (Eds.): Surgical Techniques of the Shoulder, Elbow and Knee in Sports Medicine. 2nd Edition. Philadelphia, PA: Saunders-Elsevier;2013 - Gomoll AH, Cole BJ. Knee Articular Cartilage Injury. In: DeLee JC, Drez D, Miller MD (Eds.): DeLee & Drez's Orthopaedic Sports Medicine. 4th Ed. Pittsburgh, PA: Elsevier;2013. - Syed H, Gomoll AH. Osteoarticular Transfer (OAT). In: Parvizi J(Ed.): Knee Reconstruction, Replacement and Revision. - Gomoll AH, Minas T. How to treat cartilage lesions in patients with osteoarthritis? In: Brittberg M (Ed.): Decision making in Cartilage Repair - Variables Influencing the Choice of Treatment. DJO;2015 - Ritter SY, Aliprantis AO, Gomoll AH. Cartilage Replacement in Inflammatory Arthritis. In: Brittberg M (Ed.): Decision making in Cartilage Repair - Variables Influencing the Choice of Treatment. DJO;2015 - Wilcox R, Gomoll AH. Non-surgical rehabilitation of articular cartilage Injury (including OC dissecans) in the young athletic knee. In: Reider B, Davies G, Provencher MT (Eds.):Orthopaedic Rehabilitation of the Athlete: Getting Back in the Game. Philadelphia, PA: Saunders-Elsevier 2015 - Gomoll AH. Autologous Chondrocyte Implantation. In: Cole BJ, Harris JD (Eds.): Biologic Knee Reconstruction: A Surgeon’s Guide. SLACK;2015 - Gomoll AH. Articular Cartilage and Subchondral Bone Pathology. In: Cole BJ, Harris JD (Eds.): Biologic Knee Reconstruction: A Surgeon’s Guide. SLACK;2015 - Farr J, Gomoll AH. Proximal and Distal Patellofemoral Surgery. In: Cole BJ, Harris JD (Eds.): Biologic Knee Reconstruction: A Surgeon’s Guide. SLACK;2015 - Gomoll AH: Failure of articular cartilage repair. In: Brittberg M et al. (Eds.)ICRS Cartilag/eBook. CIC;2015 - Gomoll AH: Autologous chondrocyte implantation. In: Amendola N, Gomoll AH (Eds.). Let’s discuss – Joint preservation of the knee. AAOS;2015 - Gomoll AH: Failed cartilage repair. In: Amendola N, Gomoll AH (Eds.). Let’s discuss – Joint preservation of the knee. AAOS;2015 - Chilelli B, Gomoll AH: Articular Cartilage. In: Miller M (Ed.): Orthopedic Knowledge Update – Sports Medicine Ed. 5, AAOS;2016 - Hinckel B, Gomoll AH: Autologous Chondrocyte Implantation and next generation techniques. In: McCarty E (Ed.). Clinics in Sports Medicine. Articular Cartilage. Elsevier 2017 - Mosier B, Minas T, Gomoll AH: Cartilage defects, osteochondritis dissecans and osteonecrosis. In: Katz JN (Ed.). MSK disorders for primary care physicians. 2018 - Hinckel B, Farr J, Gomoll AH: Isolated patellofemoral unipolar PFA cartilage lesions: When to intervene. In: Patellofemoral Pain, Instability, and Arthritis. ESSKA 2020 - Erickson BJ, Gomoll AH: Cartilage Surgery in the Adult. In: Thompson SR, Schmitz MR (Eds.) Complications in Orthopaedics – Sports Medicine. Elsevier 2020 - Gomoll AH, Chilelli B: Osteonecrosis of the Knee. In: LaPrade RF, Chahla J (Eds.) Evidence-based Management of Complex Knee Injuries. Elsevier 2020 - Lamplot JD, Strickland SM, Gomoll AH: Cartilage restoration strategies for the patellofemoral joint. In: Krych AJ, Biant LC, Gomoll AH, Nakamura N (eds.) Cartilage Injury of the Knee: State-of-the-Art Treatment and Controversies. Springer 2021 - Wright-Chisem J, Gomoll AH: Cell-based Cartilage Repair. In: Marx RG, Nakamura N, Musahl V, Verdonk P, Sherman SL, Getgood A (Eds.) Advances in Knee Ligament and Knee Preservation Surgery. Springer 2021 - Carr CB, Gomoll AH: Matrix Autologous Chondrocyte Implantation In: Wiesel S (Ed.): Operative Techniques in Orthopaedic Surgery, 3rd Edition. Lippincott Williams & Wilkins 2021 Non-Peer-Reviewed Publications (7) - Gomoll AH, Cole BJ, Farr J, Gillogly SD, Steadman R. Roundtable discussion: Cartilage Repair. Orthopedics today. 2008;28(9):46-53. - Gomoll AH. Editorial: Serum levels of hyaluronic acid and chondroitin sulfate as a non-invasive method to evaluate healing after cartilage repair procedures. Arthritis Res Ther 2009; 11(4):118 - Gomoll AH, Probst C, Sodha S, Minas T. Collagen membrane as cover for autologous chondrocyte implantation. Letter to the editor. Am J Sports Med. 2010 Dec;38(12):NP4 - Lattermann C, Gomoll AH, Cole BJ. Arthroscopic partial meniscectomy for degenerative meniscal tear. Letter to the editor. N Engl J Med. 2014 Mar 27;370(13):1260. doi: 10.1056/NEJMc1401128#SA3. PubMed PMID: 24670177. - Sadoghi P, Gomoll AH. New England journal of medicine article evaluating the usefulness of meniscectomy is flawed. Letter to the editor. Arthroscopy. 2014 Jun;30(6):659-60. doi:10.1016/j.arthro.2014.03.016. PubMed PMID: 24862696. - Cook JL, Gomoll AH, Farr J. Commentary on "Third-generation autologous chondrocyte implantation versus mosaicplasty for knee cartilage injury: 2-year randomized trial". J Orthop Res. 2016 Apr;34(4):557-8. doi: 10.1002/jor.23206. PubMed PMID: 26909473. - Gomoll AH. Editorial Commentary: Aragonite-Based Implants for Osteochondral Defects-Could Coral Make Old Goats Run Again? Arthroscopy. 2020 Jul;36(7):1895-1896. doi: 10.1016/j.arthro.2020.05.011. PMID: 32445892. ## Procedures & Areas of Focus Dr. Gomoll's clinical practice centers on joint preservation and cartilage restoration of the knee and shoulder. Explore the procedures he performs: Cartilage Repair Ligament Surgery (ACL & BEAR) Meniscal Procedures Osteotomy Arthritis Surgery Rotator Cuff Repair Regenerative Medicine ## Frequently Asked Questions What is Dr. Andreas Gomoll's medical specialty? Dr. Andreas H. Gomoll, MD is an orthopedic surgeon specializing in cartilage restoration and joint preservation of the knee and shoulder. He is a Professor of Orthopedic Surgery at Weill Cornell Medical College and an Orthopedic Surgeon at NYU Langone Orthopedic Center in New York. Where does Dr. Gomoll practice? Dr. Gomoll is an Orthopedic Surgeon at NYU Langone Orthopedic Center in New York City. Is Dr. Gomoll board certified? Yes. Dr. Gomoll is board certified in orthopedic surgery. His board certification and state medical licensure are listed in full on this curriculum vitae. What academic appointment does Dr. Gomoll hold? Dr. Gomoll is a Professor of Orthopedic Surgery at Weill Cornell Medical College. He completed postdoctoral training at Harvard. What professional organizations is Dr. Gomoll a member of? Dr. Gomoll is a member of the American Academy of Orthopaedic Surgeons (AAOS), the American Orthopaedic Society for Sports Medicine (AOSSM), and the International Cartilage Regeneration & Joint Preservation Society (ICRS). What procedures does Dr. Gomoll perform? Dr. Gomoll performs cartilage repair and restoration, meniscal procedures, ligament surgery including ACL and BEAR, osteotomy, arthritis surgery, rotator cuff repair, and regenerative medicine. ## Explore More - About Dr. Gomoll - Publications - Clinical Trials - Patient Testimonials - Location - Schedule a Consultation - Contact ## Professional Organizations & Affiliations - NYU Langone Orthopedic Center - Weill Cornell Medicine - Harvard Medical School - American Academy of Orthopaedic Surgeons (AAOS) - American Orthopaedic Society for Sports Medicine (AOSSM) - International Cartilage Regeneration & Joint Preservation Society (ICRS) ## Considering treatment with Dr. Gomoll? Discuss your knee or shoulder with one of the most experienced joint-preservation surgeons in the country. Make an Appointment Call 646-917-7441 --- ## Disclosures & Conflict of Interest | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/disclosures-conflict-of-interest/ Summary: Dr. Andreas Gomoll Dr. Gomoll works with companies on the development of new orthopedic implants and procedures and on trials evaluating their safety and effectiveness. All payments and relationships with industry are publicly disclosed in the CMS Open Payments database, on the HSS website, and on this page. ## Industry collaboration on new technologies Dr. Gomoll works with medical-device and biotech companies on the development of new implants and procedures, as well as on clinical trials to evaluate their safety and effectiveness. This work informs his contributions to actively enrolling clinical trials and his publications on cartilage repair and joint preservation. ## Public disclosure of payments and relationships Dr. Gomoll discloses any payments or relationships with industry related to these activities. An up-to-date list can be found in: - The CMS Open Payments database (Centers for Medicare and Medicaid Services) - Dr. Gomoll's profile on the HSS website ## Ownership interests Dr. Gomoll holds part ownership (less than 2%) in the HSS Ambulatory Surgery Center on 65th Street and 2nd Avenue in the Upper East Side, New York. This is the surgical facility where some of his outpatient procedures are performed. ## Why this matters to patients Industry collaboration is part of how new orthopedic technologies move from concept to FDA-approved patient care. Disclosing those relationships allows patients to make informed decisions and ensures that recommendations remain grounded in evidence. If you have questions about how a specific implant or procedure was selected for your case, raise them at your pre-op consultation with Dr. Gomoll. Learn more about Dr. Gomoll and his research publications. ## Questions about Dr. Gomoll's industry relationships? We are committed to full transparency — feel free to ask at any visit. Contact the Office Call 646-917-7441 --- ## About Dr. Andreas Gomoll, MD | Orthopedic Surgeon, NYC | NYU Langone Source: https://andreasgomollmd.com/dr-gomoll-1/ Summary: Dr. Andreas Gomoll is Professor of Orthopedic Surgery at Weill-Cornell Medical School and Orthopedic Surgeon at NYU Langone Orthopedic Center in NYC, specializing in cartilage repair, ACL reconstruction, and joint preservation. 20+ Years of experience 170+ Peer-reviewed publications 5 Books authored NYU Langone NYU Langone Orthopedic Center, NYC MD, Ludwig-Maximilians-Universität (Munich) PhD, Technische Universität München Residency, Harvard Combined Orthopaedic Program Fellowship, Sports Medicine, Rush University 20+ years in practice Who is Dr. Gomoll? Dr. Andreas H. Gomoll is an orthopedic surgeon in New York with over 20 years of experience. He is Professor of Orthopedic Surgery at Weill Cornell Medical School and Orthopedic Surgeon at NYU Langone Orthopedic Center, where he is the busiest joint preservation surgeon on the East Coast. He specializes in cartilage repair and transplantation, ACL reconstruction, meniscal transplantation, joint preservation, and stem-cell treatment for cartilage and arthritis of the knee and shoulder. About Dr. Gomoll ## Professor · Surgeon · Scientist Dr. Gomoll is Professor of Orthopedic Surgery at Weill Cornell Medical School and Orthopedic Surgeon at NYU Langone Orthopedic Center in New York, where he practices alongside his wife and colleague Dr. Sabrina Strickland. Previously he practiced at Harvard Medical School and Brigham and Women's Hospital as Director of the Program for Orthopedic Regenerative Medicine. He provides care for patients of all ages — from weekend warriors to professional athletes, police officers, firefighters, and military special forces. He has consulted for the Boston Ballet, the Chicago White Sox, and the Chicago Bulls. Clinical focus ## Areas of expertise Cartilage repair & transplantation ACL reconstruction Joint preservation & arthritis surgery Meniscal procedures & transplantation Stem-cell treatment for cartilage & arthritis Sports medicine — knee & shoulder Full procedure list: surgical treatments and procedures explained. Preparing for surgery? Review the pre-operative checklist. To discuss your knee or shoulder injury with Dr. Gomoll, request an appointment or contact the office. Three continents ## Education & training 1 MD + PhD — Munich, Germany Ludwig-Maximilians-Universität Medical School (MD) and Technische Universität München (PhD). Additional exchanges at Oxford University and the University of Cape Town. 2 Research Fellowship + Residency — Harvard, Boston 2-year orthopaedic research fellowship at Brigham and Women's Hospital / Harvard Medical School, followed by General Surgery internship and the Harvard Combined Orthopaedic Residency Program (BWH, MGH, Beth Israel Deaconess, Boston Children's). 3 Sports Medicine Fellowship — Rush, Chicago Orthopaedic Sports Medicine Fellowship at Rush University Medical Center, Chicago, IL. Academic appointments ## Career & leadership After his fellowship at Rush, Dr. Gomoll joined Harvard / Brigham and Women's Hospital as a Sports Medicine Surgeon, rising to Associate Professor of Orthopaedic Surgery at Harvard Medical School and Director of the Orthopaedic Program in the Center for Regenerative Medicine. In 2018 he was recruited to HSS to build its joint preservation and cartilage repair program — he has since become the busiest joint preservation surgeon on the East Coast. - Professor of Orthopedic Surgery — Weill Cornell Medical School - Attending Orthopedic Surgeon — NYU Langone Orthopedic Center In the OR on a complex reconstructive knee case. Science + practice ## Research & publications Dr. Gomoll has been involved in clinical and basic-science research for over 20 years, focusing on cartilage transplants, stem cells for cartilage repair, and arthritis treatment. He has published 5 books and authored over 170 peer-reviewed articles, and lectures regularly at national and international conferences. His work with the FDA on cartilage repair devices has informed regulatory pathways for new orthopedic technologies. See active clinical trials and Dr. Gomoll's full list of publications. View Full Curriculum Vitae → PubMed ↗Google Scholar ↗NYU Langone Profile ↗Weill Cornell ↗ Professional standing ## Memberships & editorial roles ### Society memberships - AOSSM — Fellow - ICRS — Fellow, past Chairman Regulatory Affairs, past Board Member - ISAKOS - ESSKA - AANA ### Editorial boards - Cartilage (ICRS journal) - Orthopaedic Journal of Sports Medicine (AOSSM journal) - Reviewer for numerous peer-reviewed journals See disclosures and conflict-of-interest for Dr. Gomoll's full industry relationships and consulting activities. Watch ## Videos with Dr. Gomoll Transcript my name is andreas Kemal I'm an orthopedic surgeon in the sports medicine division at HSS and my thing is knee surgery and joint preservation most of them patients who come see me have knee or shoulder injuries they might be sports related in terms of they had an acute injury while playing sports sometimes it's just an over the years damage has accumulated so it's not one traumatic event but it's sort of been bugging them for years I also need to know what your expectations are what does your life look like what do you do for work what you do for hobbies that really has a surprisingly large impact on the treatment decisions when we treat with feeding problems surgically we can either do what's called keyhole surgery is so arthroscopic surgery where just make tiny little holes a look inside with a fiber-optic camera and then we can with tiny instruments oftentimes fix things without big incisions there's some problems that need bigger answers and for those who do what's called an open surgery where we make an incision so that it can get in and replace part of your knee joint not necessarily with metal and plastic but sometimes with biologic replacement options so in terms of where can we see each other and historically HSS has been on the Upper East Side Manhattan is a great place but it's not the greatest place if you come in from outside Manhattan so we're trying to make things easier so we have opened several satellites and the satellite I go to is Stamford Connecticut this is a Chelsea pier we have a great rehab center we have imaging and we have physician offices so you can see me here at the main hospital you can see me in Stanford the best thing really at the end of the day if you have a long clinic day and you see a lot of patients but if somebody says you know what I can do things I haven't been able to do for ten years thank you that's the best thing Dr. Gomoll at Hospital for Special Surgery Transcript so I think the most important thing when you're faced with deciding on whether you need to have surgery or not is pick someone that you have a connection with that you can build trust because whenever you have surgery at least for a while you have a relationship with someone the surgeons we always joke we take someone in our family at least temporarily you know if you go see someone and they come into your room and they never let go of the door handle and they just say you need to advance and it disappeared probably not the best doesn't mean that you have to have a three-hour conversation every time at least find someone and you feel you can trust When deciding to have surgery More: video library · shorts with Dr. Strickland · in the news ## Schedule a consultation with Dr. Gomoll New York patients can book online through NYU Langone or by calling our office. We see patients from across the United States and internationally. Make an Appointment Call 646-917-7441 --- ## /google391c0019d52139cb.html Source: https://andreasgomollmd.com/google391c0019d52139cb.html google-site-verification: google391c0019d52139cb.html --- ## In the News & Media | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/in-the-news-1/ Summary: Dr. Andreas Gomoll featured on CBS New York, ABC News, ESPN Dr. Gomoll's research and clinical work has been featured by CBS, ABC News, ESPN, Becker's Hospital Review, and the Joe Rogan Experience (David Goggins discussing his HTO at HSS). Coverage spans the Cartiheal coral implant, the MISHA partial knee implant, Hyalex cartilage system, FDA trials of meniscal spacers, and umbilical-cord stem-cell transplantation for cartilage repair. ## Press features ### CBS New York — Cartiheal coral implant for cartilage repair CBS featured Dr. Gomoll in a story about the Cartiheal coral implant — a new treatment option for cartilage defects in the knee that he has been using for nearly 3 years. He was an investigator on the FDA approval trial. ### Becker's Spine — Top 1% Academic Orthopaedic Surgeons Dr. Gomoll was honored as one of the top 1% academic Orthopaedic Surgeons in the United States. ### CBS — Dr. Mallika Marshall on Dr. Gomoll's stem-cell trial Dr. Mallika Marshall from CBS reports on Dr. Gomoll's stem-cell trial for cartilage defects. Watch ## Video features ### Dr. Gomoll on the David Goggins / Joe Rogan Experience David Goggins on the Joe Rogan Experience discussing his high tibial osteotomy performed by Dr. Gomoll at HSS. ### FDA unloading device trial. Dr. Gomoll treats the first patient in the US with the new MISHA unloading device for knee osteoarthritis Dr. Gomoll treats the first patient in the US with the new MISHA unloading device for knee osteoarthritis, as part of the FDA trial. TranscriptCENTER 5'S EMILY REIMER SHOWS US HOW IT WORKS. >> IT FELT LIKE A DULL ACHE ALL THE TIME. EMILY: DAVID DESNOYERS HAD NO PATIENCE FOR HIS KNEE PROBLEM. >> I RUN. I PLAY ICE HOCKEY. EMILY: BUT FOR THIS 53-YEAR-OLD GRANDFATHER, THE PAIN ONLY GOT WORSE. >> MY KNEE WAS GETTING TO THE POINT WHERE I COULDN'T DO THOSE THINGS AS MUCH OR AS WELL AS I LIKE TO. EMILY: THESE X-RAYS SHOW WHY. NORMAL KNEES HAVE A CUSHION OF CARTILAGE SEPARATING THE BONES. >> AND WHAT'S NOT NORMAL IS WHAT WE SEE ON THE LEFT KNEE, WHERE YOU CAN SEE HOW THE BONES TOUCH. EMILY: DAVID'S DIAGNOSIS -- OSTEOARTHRITIS FROM ACTIVE WEAR AND TEAR IN HIS JOINT. >> IN THE LATE STAGES, IT HURTS ALL THE TIME. EMILY: FOR YEARS, DAVID WORE THIS BULKY BRACE WHEN HE PLAYED SPORTS. >> IT HELPED, BUT IT WAS NOT A LONG-TERM SOLUTION. EMILY: AND FOR DAVID, NEITHER WAS A FULL OR PARTIAL KNEE REPLACEMENT THAT CAN REQUIRE MANY MONTHS OF REHAB. >> TOO INVASIVE FOR ME. TOO YOUNG. TOO MUCH DOWNTIME. EMILY: DR. ANDREAS GOMOLL OFFERED A NEW OPTION -- SIGNING UP FOR A NATIONWIDE FDA TRIAL TO TEST THIS IMPLANT THAT'S SURGICALLY ATTACHED TO THE BONES WITH SCREWS. >> ESSENTIALLY, YOU ADD A SHOCK ABSORBER, WHERE EVERY TIME YOU TAKE A STEP, THAT LITTLE CYLINDER TAKES AWAY SOME OF THE STRESS. I THINK THAT'S A REALLY INTERESTING OPTION. EMILY: AND DAVID IS THE FIRST PATIENT IN THE UNITED STATES TO TEST IT OUT. HE HAD THE SURGERY AT BRIGHAM AND WOMEN'S IN NOVEMBER. >> I WAS WEIGHT-BEARING RIGHT AWAY. EMILY: AND WITHIN TWO WEEKS, HE WAS OUT ON THE ICE WITH HIS GRANDDAUGHTER. >> IT'S BEEN GREAT TO GET OUT THERE AND BE, YOU KNOW, BE ACTIVE AGAIN. EMILY: EVEN DR. GOMOLL IS IMPRESSED WITH THE QUICK PACE OF DAVID'S RECOVERY. >> I THINK HE'S A BIT OF A SUPERSTAR, BUT IT CERTAINLY SHOWS WHAT THE IMPLANT CAN WITHSTAND. AT THE END OF THE DAY, ANYTHING THAT HE FEELS HE CAN TOLERATE, IT'S OK WITH ME. EMILY: THIS TRIAL WILL TAKE A FEW YEARS TO COMPLETE. DOCTORS WANT TO KNOW HOW STABLE IS THIS IMPLANT, HOW QUICKLY DOES IT WEAR OUT? BUT IF SUCCESSFUL, IT COULD OFFER AN APPEALING NEW OPTION FOR YOUNGER, ACTIVE PATIENTS ### Dr. Gomoll on ESPN's Weekend Warrior Dr. Gomoll discusses stem cells with Dr. Klapper on the ESPN Weekend Warrior radio show. TranscriptDURING SWIFT'S CONCERT IN SYDNEY THE PAIR MET AND SHE GAVE HER TICKETS. PRIME SEATING AT THE SHOW. Heather: THAT'S A LOVELY STORY. A BROCKTON MAN IS THE FIRST TO UNDERGO A GROUND BREAKING KNEE SURGERY. THERE ARE FEW TREATMENT OPTIONS FOR THE THOUSANDS OF YOUNGER PEOPLE WHO SUFFER A TORN MENISCUS. EMILY SHOWS US THERE ARE WOMEN WHO CAN HELP CHANGE THAT. Reporter: BASKETBALL HAS BEEN A CENTRAL PART OF ROB PRICE'S LIFE. I PLAYED MY WHOLE LIFE. I WOULD PLAY PICK UP IN THE DRIVEWAY AND PLAY WITH MY UNCLES. Reporter: HE PLAYED THROUGH SCHOOL AND NEVER STOPPED UNTIL ABOUT 10 YEARS AGO. ONE DAY AT PRACTICE, NO WARNING, NO NOTHING. Reporter: DOCTORS HAD TO REPLACE HIS ACL. ROB ALSO TORE HIS MENISCUS AND IT HAD TO BE REMOVED. IT DIDN'T STOP THE PAIN. WITHOUT THE MENISCUS IT WAS BONE ON BONE. Reporter: HE IS BEING TREATED BY AN ORTHOPEDIC SURGEON. EVERY TIME THEY STEP IT IS A HARD NOT CUSHIONED BLOW. Reporter: HE DESCRIBES THE MENISCUS AS A SHOCK ABSORBER. EACH KNEE HAS TWO. YOU CAN SEE A BLACK RYE ANGLE RIGHT THERE. Reporter: THIS IS ROB'S. YOU WOULD WANT TO SEE A BLACK TRIANGLE HERE. Reporter: THE MENISCUS WEARS DOWN AS WE AGE. IN THE YOUNGER PEOPLE THEY ARE OFTEN INJURED, BUT THE KNEE REPLACEMENT SURGERY IS NOT TYPICALLY AN OPTION. IT IS SOMETHING WE PREVIOUSLY HAD NO TREATMENT FOR. Reporter: BUT THAT MAY BE CHANGING WITH THIS. THE NEW SURFACE MENISCUS IMPLANT IS UNDERGOING THE TRIAL AND HE IS THE FIRST DOCTOR TO TRY IT. YOU DON'T HAVE TO CUT BONE AND YOU DON'T HAVE TO PERMANENTLY ALTER THE ANATOMY OF THE KNEE JOIN. Reporter: THE I'M PLANT SIMPLY POPS IN BETWEEN THE TWO BONES IN THE KNEE. NO SUTURES, NO SCREWS, A FAST RECOVERY ABOUT TWO OR THREE MONTHS. YOU DON'T NEED CRUTCHES VERY LONG, JUST A FEW WEEKS. I WOULD LIKE TO RUN, PLAY BASKETBALL. Reporter: HE IS THE FIRST PATIENT HERE TO GET THE IMPLANT. HE CAN'T WAIT TO BE PAIN FREE AND HE KNOWS HIS EXPERIENCE WILL ALSO HELP OTHER PATIENTS. ROB HAD THE SURGERY A WEEK AGO AND SAYS HE IS DOING WELL. THE IMPLANT IS ALREADY IN USE ### Channel 5 — FDA meniscal spacer trial Channel 5 report on Dr. Gomoll's FDA trial of a new meniscal spacer device — for symptomatic patients who lost their medial meniscus to injury but before arthritis develops. TranscriptFAULTY PROPANE TANK SUSPECTED AS POSSIBLY STARTING THE FIRE, STILL UNDER INVESTIGATION. A FASTER RECOVERY FROM KNEE SURGERY AND STRONGER TISSUE THAT WILL LAST LONGER. THAT IS THE PROMISE TONIGHT OF A NEW PROCEDURE. ONE OF ONLY TWO HOSPITALS IN THE COUNTRY GIVING IT A TRY. AND MAN IS ALREADY SEEING RESULTS. IT'S MORE OF A MENTAL GAME. A MENTAL GAME AND PHYSICAL STRUGGLE FOR SEAN FAIR. I HAVEN'T BEEN IN THE GYM IN 15 MONTHS, LONGEST. THE 34-YEAR-OLD A NEW DAD HAS BEEN ACTIVE ALL HIS LIFE. FOOTBALL, BASKETBALL, BASEBALL, TENNIS, LACROSSE, GOLF. BUT SEVERE KNEE PAIN HAS SIDELINED HIM FOR MORE THAN A YEAR. DOCTOR AN ORTSDZ HOPEDIC SURGEON SHOWS A HEALTHY KNEE. HE HAS A POTHOLE. IT HE HAS ONE AREA THAT HAS A BIG POTHOLE. THE CART HREUPBL IS PEELING OFF. THE EASY FIX IS A KNEE REPLACEMENT. SOMEONE AS YOUNG AS SEAN THAT WOULDN'T BE AN OPTION. YOU DOUN'T WANT TO GET TO THAT STAGE. HE WENT ON THE WAITING LIST. AFTER MONTHS WITHOUT RESULTS HE OPTED FOR A CLINICAL TRIAL. SHAWN BECAME ONE OF THE FIRST U.S. PATIENTS TO HAVE A GROUND BREAKING TREATMENT A COMPANY IN KOREA IS USED STEM CELLS FROM THE UMBILICAL CORD. IT FILLS THE DEFECT AND THEY START PRODUCING. THE PROCESS CAN REDUCE RECOVERY TIME AND THAT NEW TISSUE WILL BE STRONGER THAN WHAT YOU GET IN TRADITIONAL PROCEDURES. ALMOST TWO MONTHS AFTER SURGERY, SHAWN IS REGAINING MOVEMENT. LESS PAIN, MUCH MORE MOBILITY. HE'S ALMOST READY TO SHED THE KNEE BRACE AND CRUTCHES. FULL RECOVERY COULD TAKE A YEAR ### Channel 5 — FDA umbilical stem cell transplantation trial Channel 5 report on Dr. Gomoll's FDA umbilical stem-cell trial for cartilage repair. Transcripteven a 12-time Olympic medal winner like 43 year old Dara Torres can suffer from a debilitating injury with great for arthritis and virtually no cartilage in her left knee this five-time Olympian sought out the cartilage repair center at BWH I had so much damage in my knee that it was really what were we gonna do where we getting it the best care and will I be able to have the same quality of life and be able to swim again it was really a decision between a knee replacement which essentially meant stopping sports stopping athletics or trying cartridge repair Dara was a candidate for a CI autologous chondrocyte implantation we use chondrocytes that we get in in a nice coat we take these chondrocytes or cartilage cells we grow more from them and these Congress has already know what they want to become and they want to make cartilage so there's no confusion there the whole process takes about six weeks and you grow from about one hundred fifty thousand two hundred thousand cells until you reach the order of 40 million cells and then in a second procedure the patient comes back and now unfortunately we need to actually open up the knee and that's the process that's about as involved as a total knee replacement because you need to really see the defect it's very fine work and in that process we implant the cells and in that space you inject the fluid with the cells and then over time the cells attach to the bone and produce more partition and eventually it fills the hole basically it's all me I'm not getting it from some foreign body or anything like that anything else like that it's it's my cartilage dr. Gamel compares this process to filling potholes on a street maybe local municipality should pay attention so this ACI a autologous chondrocyte implantation and where I take cartridge cells and put them back into the joint that's really something for large and multiple potholes in the name so that's one of the more advanced techniques that really only a few specialized centers in the u.s. apply I couldn't believe that they did stuff like this I didn't I didn't even know they did and I've even tweeted about it and people I have twitter and people are like wow we had no idea that that a doctor can do this dr. Gamel is quick to point out that every patient situation is different and a CI is not appropriate or necessary for everyone but for Dara Torres B WH provided a gold-medal solution as she vies for a spot on her sixth Olympic team she has already qualified for the next step the Olympic Trials there's no possible way I wouldn't be able to do this if I had not come to bring them a woman's and the cartilage para Center there's just there's no way that my knee would be where it is right now and where it needs to be to go for another Olympic Games ### Cartilage repair with ACI Dr. Gomoll discusses cartilage repair using autologous chondrocyte implantation (ACI). Transcriptwelcome to your health information about today's top health topics direct from Brigham and Women's Hospital experts we want to remind you that this information should not replace the advice or recommendations from your healthcare provider hi I'm andreas como I'm an orthopedic surgeon specializing in Carter's repair at bringing Women's Hospital cartridge is a very complex tissue that covers the ends of all bones inside joints and it provides an almost frictionless surface and that's how it can withstand us taking between one and two million steps a year if it does not contain any blood supply and because of that once it's injured it cannot heal itself and that's where we come in as cartridge repair surgeons there are two different ways to injure cartage one which usually occurs in younger patients and the teens and 20s is so called acute cartridge damage and that can happen when you tell you a CL you dislocate your patella you essentially chip the cartridge and create a defect the damage that we see in older patients that's usually because of recurring micro damage it is and not an acute one-time injuring it is something that happens over time when you talk about cartilage damage by large we women a defect in the the cartilage and you can think of a cartridge defect either like a cavity in a tooth or like a pothole industry you have a street that otherwise looks good but there's one area one pot hole and just like potholes cartridge defects tend to get big over time so we really want to fill them before they get too large when you when you think about the field of cartilage repair there are many different ways of treating cartridge defects and you really need to look at the size and the location of the defect so ACI which stands for toddlers chondrocyte implantation has also known as cartas l was originally developed in sweden by a surgeon named Lars peterson and at that time there was really no technology like this available in the United States so my partner tom- traveled to Sweden and learned the technique and brought it to the US and he started the first cartridge repair center in the u.s. right here at Brigham and Women's Hospital and since that time more than 10,000 of these cases have been performing the US alone it's within the field of car to repair the most advanced technique it's an example of tissue engineering and different than other techniques it gives you a very high quality repair tissue that's very close to normal cartilage AC I originally was designed for the knee and that's the most common application over ninety percent of these procedures are done in the name it does involve two procedures and the first procedure is just an arthroscopic procedure where you go into the knee through two very small almost like poke holes and you look inside with the fiber optic camera you get a sense of the size and the location of the defect and if you feel that it's amenable to ACI then you take a small cartridge biopsy and it's just a piece of cartilage about the size of a tic tac and we can use that piece of cartilage to grow more carcass from it you performed tissue culture and multiply the cells until you have tens of millions of the cells this is a process that takes between four to six weeks you come back to re-implant the cells and that's a more involved procedure so here you need a true incision because you need to see the defects and actually clean out the defect to make sure that you have good surrounding healthy cartilage and then you take a piece of tissue and it's a membrane and you suture that over the defect so it's like a lid so that you have a small water type chamber because the cells come back as a liquid and you inject the the cells with a small syringe into this watertight chamber it it produces good cartilage but it also takes a very long time so usually when we do a CI our patients on crutches for anywhere between six and ten weeks they can do activities of daily living but we don't want them to run we don't want them to do any pivoting sports that has to wait until 12 to 18 months once the cartridge is really healed and has become much stronger so after everything is healed after 12 to 18 months I routinely let my patients go back to any activity they desire they can ski they can play tennis they can play basketball and find their own limitations and some patients are able to run marathons with no pain but that is a very lofty goal our goal from a physician side is I want to delay the need for joint replacement for you as long as possible and we found that in more than ninety percent of patients we could indeed delay via the need for joint replacement surgery for at least five to ten years thanks for watching your help from Brigham and Women's Hospital your health is intended for educational purposes only it should not take the place of advice or recommendations from your health care provider if you have questions about what you heard please consult with your doctor you ## Notable mentions David Goggins on the Joe Rogan Experience discussing his experience with a high tibial osteotomy performed by Dr. Gomoll at HSS. davidgoggins.com Custom partial knee replacement for patellofemoral arthritis, recently introduced in New York. Watch the video → ABC News interviews Dr. Gomoll on his patient being the first in the US to receive a new implant for knee osteoarthritis. Watch the video → For research detail behind these stories, see Dr. Gomoll's publications and active clinical trials. From the headlines to the clinic ## Procedures featured in these stories - Cartilage repair — including the Cartiheal coral implant covered by CBS New York - Arthritis surgery — including the MISHA knee unloading device for medial knee arthritis - Regenerative medicine — the stem-cell trials featured on CBS and ESPN - About Dr. Gomoll — full credentials, training, and academic appointments ## Podcasts - BraunPR Podcast with Dan Braun — Patellofemoral and Cartilage Disorders — Dr. Gomoll and his wife Dr. Sabrina Strickland discussed patellofemoral and cartilage disorders with Dan Braun on BraunPR. Read about a recent publication on meniscus transplantation: Ambra et al. "Anatomic Risk Factors for Focal Cartilage Lesions in the Patella and Trochlea." The American Journal of Sports Medicine (2019). ## Want to learn more about Dr. Gomoll? Explore credentials, training, and research output, or schedule a consultation. About Dr. Gomoll Make an Appointment --- ## Our Research: Mission and Scope | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/intro-1/ Summary: Dr. Andreas Gomoll Dr. Gomoll's research mission is to develop less invasive, more effective treatment options for joint injury and arthritis — and to bring those treatments to patients faster. He has lectured in over 20 countries on ligament and joint reconstruction, cartilage transplantation, and sports medicine, and authored 170+ peer-reviewed publications. ## Why we do research Helping patients to get better is the most important — but not the only — part of our mission. We also conduct basic science and clinical research to develop tomorrow's treatment options that will be less invasive, more effective, and offer faster return to full function. Dr. Gomoll has given over a hundred lectures in more than 20 countries on topics of ligament and joint reconstruction, cartilage transplantation, and sports medicine. Read more about Dr. Gomoll's background. ## Where to learn more - Actively enrolling clinical trials — participate in advancing the field - Publications — books and full PubMed list - Profiles & research links — HSS, Weill Cornell, Google Scholar - In the news — how research translates to patient care ## Interested in clinical trials? Call the office or request a consultation to ask about trial eligibility. Call 646-917-7441 View Open Trials --- ## What We Do: Joint Preservation Specialty | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/intro/ Summary: Dr. Andreas Gomoll specializes in joint preservation — minimally invasive treatment of meniscal, ACL, cartilage, and patellar injuries, with a focus on delaying or avoiding joint replacement. Dr. Gomoll specializes in minimally invasive treatment of joint injuries — from sports trauma to active-lifestyle wear-and-tear. His clinical focus is joint preservation: procedures that delay or avoid joint replacement by repairing damaged cartilage, ligaments, menisci, and realigning malaligned bones. He is widely recognized as one of the leading joint-preservation surgeons on the East Coast. ## Knee specialty In the knee, Dr. Gomoll performs procedures to repair meniscal injury, ACL tears, patellar instability, cartilage damage, and osteoarthritis. He has a large referral practice for failed prior ligament surgery — particularly revision ACL reconstruction. Routinely managing the complexities of young patients with multiple prior procedures has also made him a sought-after surgeon for primary ACL reconstruction. ## Joint preservation philosophy His main focus is on joint preservation — performing procedures intended to delay the need for joint replacement. Cartilage damage and early arthritis often develop after prior injury and surgery involving the ACL or meniscus, or in patients anatomically built in a way that leads to early degeneration. Joint preservation is achieved through: - Osteotomy — high tibial, distal femoral, or tibial tubercle, to correct malalignment - Meniscal transplantation — replacing missing meniscus tissue with donor allograft - Cartilage repair — including OCD repair, subchondral drilling (microfracture), OATS / mosaicplasty, osteochondral allograft transplantation, and autologous chondrocyte implantation (MACI) ## Watch: Dr. Gomoll on joint preservation Transcript people have asked what what's joined preservation seems they'll defines in a nutshell I'm trying to keep a knee replacement out of your knee knee out of your life for as long as I can and for some patients I can because the disease cartridge damaged arthritis has progressed to a level where nothing else really makes sense and if that's the case I do partial knee replacements so still trying to do the minimal thing to get you active and back on your feet but often times I can do join preservation and surgery and that's trying to restore a cartilage meniscus maybe Ostia on me is if your alignment is off if you have bowlegged I have not knees so since you trying everything we can to keep your own knee for as long as we can [Music] ## Explore Dr. Gomoll's procedures - All surgical treatments — full procedure overview - Cartilage repair — MACI, OCA, OATS, microfracture - Meniscal procedures — meniscectomy, repair, and transplantation - Arthritis surgery — partial replacement, MISHA, patellofemoral replacement - Regenerative medicine — PRP and clinical trials - Surgical procedures explained — further reading from HSS and AAOS ## Considering a joint-preservation procedure? Schedule a consultation with Dr. Gomoll to discuss whether you're a candidate. Schedule a Consultation Call 646-917-7441 --- ## Shoulder Rehab Protocols (PT) | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/knee-1/ Summary: Phase-by-phase physical therapy protocols for shoulder procedures performed by Dr. Andreas Gomoll — rotator cuff repair, biceps tenodesis, biceps tenotomy, and arthroscopic anterior instability repair. Below are downloadable PDF rehab protocols for the shoulder procedures Dr. Gomoll performs — rotator cuff repair, biceps tenodesis, biceps tenotomy, and arthroscopic anterior (instability) repair. Bring the appropriate protocol to your first physical therapy visit. ## Shoulder rehab protocols - Rotator Cuff Repair — Download PDF - Biceps Tenodesis — Download PDF - Biceps Tenotomy — Download PDF - Arthroscopic Anterior Instability Repair — Download PDF ## How to use these protocols Surgery is teamwork between the surgeon, the patient, and the rehabilitation specialist. Following the right protocol is what determines whether your repair holds, your range of motion returns, and your shoulder regains strength. - Download the protocol that matches your procedure - Bring it to your first physical therapy visit (printed or on your phone) - Your physical therapist follows the phase-by-phase progression on the document - Questions can be directed to Dr. Gomoll's athletic trainer by calling the office at 646-917-7441 For knee rehab protocols, see our knee rehab protocols page. For general post-op recovery FAQs, see after-surgery instructions. ## About shoulder surgery with Dr. Gomoll The rotator cuff is the most important system of muscles and tendons for shoulder function. Dr. Gomoll repairs cuff tears arthroscopically through small portal incisions — avoiding open surgery and accelerating early recovery. Biceps tendon issues (impingement, instability, partial tearing) are addressed with tenodesis (anchoring the tendon at a new attachment) or tenotomy (releasing the tendon). Arthroscopic anterior stabilization treats recurrent shoulder dislocations. For more on Dr. Gomoll's shoulder practice, see rotator cuff repair on the surgical treatments page. ## Questions about your shoulder rehab? Call the office and ask for Dr. Gomoll's athletic trainer. Call 646-917-7441 Request Follow-Up --- ## Knee Rehab Protocols (PT) | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/knee/ Summary: Phase-by-phase physical therapy protocols for knee procedures performed by Dr. Andreas Gomoll — autologous chondrocyte implantation (ACI / MACI), osteochondral allograft, meniscal allograft, ACL reconstruction (hamstring autograft, allograft), and MPFL reconstruction. Below are downloadable PDF rehab protocols for every knee procedure Dr. Gomoll performs — ACI / MACI (femoral condyle, patellofemoral, and combined sites), osteochondral allograft, meniscal allograft, ACL reconstruction (hamstring autograft and allograft), and MPFL reconstruction. Hand the appropriate protocol to your physical therapist before your first PT visit. ## Autologous Chondrocyte Implantation (ACI / MACI) — phased protocols ACI / MACI rehab is divided into three stages by site of cartilage repair. Use the protocol that matches your procedure: ACI Femoral Condyle (FC) Stage 1 (PDF) · Stage 2 (PDF) · Stage 3 (PDF) ACI Patellofemoral (PF) Stage 1 (PDF) · Stage 2 (PDF) · Stage 3 (PDF) ACI Combined PF + FC Stage 1 (PDF) · Stage 2 (PDF) · Stage 3 (PDF) ## Other knee rehab protocols - Osteochondral Allograft Transplantation — Download PDF - Meniscal Allograft Transplantation — Download PDF - ACL Hamstring Autograft Reconstruction — Download PDF - ACL Allograft Reconstruction — Download PDF - MPFL Reconstruction — Download PDF ## How to use these protocols Surgery is teamwork between the surgeon, the patient, and the rehabilitation specialist. Your post-operative rehabilitation contributes as much to overall success as the surgical procedure itself. - Download the protocol that matches your procedure - Bring it to your first physical therapy visit (printed or on your phone) - Your physical therapist follows the phase-by-phase progression on the document - Questions can be directed to Dr. Gomoll's athletic trainer by calling the office at 646-917-7441 For shoulder rehab protocols (rotator cuff, biceps, instability), see our shoulder rehab protocols page. For general post-op recovery FAQs, see after-surgery instructions. ## Procedure information If you'd like to read more about the procedure itself before your rehab starts: - Cartilage repair (ACI / MACI, OCA, OATS, microfracture) - Meniscal procedures (meniscectomy, repair, allograft transplant) - ACL reconstruction - Bracing & ice machine instructions ## Questions about your rehab plan? Call the office and ask for Dr. Gomoll's athletic trainer. Call 646-917-7441 Request Follow-Up --- ## Dr. Gomoll's Profiles & Research Links | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/links-1/ Summary: Find Dr. Andreas Gomoll on Hospital for Special Surgery, Weill Cornell Medical College, Google Scholar, and PubMed. Dr. Gomoll maintains professional profiles at the Hospital for Special Surgery, Weill Cornell Medical College, and Google Scholar. His full publication list is on PubMed. Use the links below to explore his clinical and academic profiles. Where Dr. Gomoll practices ## Hospital & clinical profile - Hospital for Special Surgery — clinical profile, areas of expertise, hospital affiliations, and patient resources Academic appointment ## Academic profile - Weill Cornell Medical College — faculty page, academic profile, and research interests Publications & citations ## Research & publications - Google Scholar — full citation index and h-index - PubMed — complete list of peer-reviewed publications ## Related on this site - About Dr. Gomoll — full bio with credentials, training, and editorial roles - Publications — books and PubMed articles - Clinical trials — actively enrolling and recently completed - In the news — press, podcasts, and TV interviews ## Looking to schedule a consultation? Click below to make an appointment with Dr. Gomoll at HSS. Make an Appointment Call 646-917-7441 --- ## Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/main/ Dr. Andreas Gomoll is double board-certified in Orthopaedic Surgery and Sports Medicine. He is a Professor of Orthopaedic Surgery, a Fellow of the American Academy of Orthopaedic Surgeons, the American Orthopaedic Society for Sports Medicine, and the International Cartilage Repair Society. He holds leadership positions in these and other US and international professional societies, as well as being on the editorial boards of several Orthopaedic journals. He has been in practice since 2006 and is devoted to preserving or restoring quality of life for patients with injuries to the knee and shoulder. In the knee his interest is in the reconstruction of injuries such as ACL tears, meniscus and cartilage defects. He is widely recognized as one of the leading surgeons specializing in joint preservation. His focus is on the repair of damaged structures that would otherwise lead to accelerated deterioration of the knee joint, or to treat damage that has already developed as a result of injuries that were not or only inadequately treated. For example, he has extensive experience with ACL reconstruction and meniscus repair, both performing primary procedures, as well as revision surgery for failed prior procedures. Cartilage damage can occur due to injury such as ACL tears or patellar dislocations, due to damaged meniscus or ligaments, or, as is the case with osteochondritis dissecans (OCD), develops during the teenage years. Dr. Gomoll treats cartilage damage with cartilage repair and transplantation through procedures such as osteochondral allograft transplantation or MACI grafts, while other damaged joint structures are addressed through meniscus transplantation, ACL reconstruction or osteotomy. Knee replacement surgery should be the last resort, and his philosophy is to delay joint replacement surgery through biologic interventions, and when this is not possible, employ the least invasive techniques to perform robotic partial knee replacements. In the shoulder, he specializes in arthroscopic surgery for the treatment of rotator cuff and biceps issues. He has been awarded several Best Doctors designations, is a Castle Connolly Top Doctor, recipient of the Who is Who Humanitarian award, and was recognized as one of 16 stand-out sports knee surgeons in North America. He was a member of the Brigham and Women's Hospital/Harvard Medical School Cartilage Repair Center, and Director of the Orthopaedic Program in the BWH Center for Regenerative Medicine prior to moving his practice to New York. He leads and participates in multiple surgical and non-surgical research trials of innovative new treatments for ligament, meniscus and cartilage damage, and has published over 170 articles and 5 books in this field. --- ## Videos — Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/new-gallery/ 1 2 3 4 Previous Next --- ## Newsletter | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/newsletter/ Summary: The Strickland Gomoll Orthopaedic Surgery newsletter — current research and patient education on advanced knee care, joint preservation, and sports medicine from Drs. Sabrina Strickland and Andreas Gomoll. Welcome to the Strickland Gomoll Orthopaedic Surgery newsletter. Each issue shares current research and up-to-date information on common sports injuries, joint preservation, and advanced knee care from Drs. Sabrina Strickland and Andreas Gomoll. Select an issue below to read it in full or download the PDF. Vol. 2 · July 1, 2026 ## Meniscal Tears ⬇ PDF Vol. 1 · April 2, 2026 ## Inaugural Issue ⬇ PDF --- ## Newsletter Vol. 1: Inaugural Issue | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/newsletter/vol-1/ Summary: Vol. 1 · April 2026 of the Strickland Gomoll Orthopaedic Surgery newsletter — Inaugural Issue. Current research and patient education on advanced knee care, joint preservation, and sports medicine from Drs. Sabrina Strickland and Andreas Gomoll. Inside this issue: Meet Your Surgeons · Our Areas of Expertise · Research & Innovation · Clinical Topic Vol. 1 · April 2026 ## Inaugural Issue ⬇ Download the full newsletter (PDF) ⬇ Download the full newsletter (PDF) ← All newsletter issues --- ## Newsletter Vol. 2: Meniscal Tears | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/newsletter/vol-2/ Summary: Vol. 2 · July 2026 of the Strickland Gomoll Orthopaedic Surgery newsletter — Meniscal Tears. Current research and patient education on advanced knee care, joint preservation, and sports medicine from Drs. Sabrina Strickland and Andreas Gomoll. Inside this issue: Clinical Topic: Meniscal Tear · Treatment Options · Research · Meniscus Recovery FAQs · Myths about Meniscal Tears Vol. 2 · July 2026 ## Meniscal Tears ⬇ Download the full newsletter (PDF) ⬇ Download the full newsletter (PDF) ← All newsletter issues --- ## Surgical Treatments | Andreas H. Gomoll, MD | HSS, NYC Source: https://andreasgomollmd.com/procedures-1/ Summary: Surgical treatments performed by Dr. Andreas Gomoll at HSS — meniscal surgery, ACL reconstruction (including BEAR implant), cartilage repair, osteotomy (HTO), arthritis surgery (MAKO partial replacement, MISHA), and rotator cuff repair. All procedures performed by Andreas H. Gomoll, MD — Professor of Orthopedic Surgery at Weill Cornell Medical School and Attending Surgeon at HSS, with 20+ years of experience and 170+ peer-reviewed publications. View full credentials & CV → Dr. Gomoll specializes in surgery of the knee and shoulder, with a clinical focus on joint preservation: meniscal surgery and meniscal transplantation, ACL reconstruction (including the FDA-approved BEAR implant), cartilage repair (MACI, osteochondral allograft, OATS, microfracture), osteotomy for malalignment, partial knee replacement (MAKO robotic-assisted, MISHA shock absorber), and arthroscopic rotator cuff repair. Below is an overview — click through for a full breakdown of each procedure. At a glance ## Procedures performed by Dr. Gomoll Click any procedure to jump to its detail below, or follow through to its dedicated page. ### Meniscal Surgery The meniscus is a horseshoe-shaped shock absorber inside the knee. Tears can be treated by partial removal (meniscectomy), suture repair, or — for prior near-total meniscectomy — meniscal allograft transplantation. Learn more → ### Ligament Surgery (ACL Reconstruction & BEAR Repair) ACL tears typically require reconstruction with hamstring, quadriceps, patellar tendon, or donor graft. The newer FDA-approved BEAR implant uses a collagen sponge to support healing in select proximal ACL tears, avoiding tendon harvest. Learn more → ### Cartilage Repair For focal cartilage defects: MACI (autologous chondrocyte implantation), osteochondral allograft transplantation, OATS / mosaicplasty, microfracture, and investigational stem-cell therapies. Selection depends on defect size, depth, and bone involvement. Learn more → ### Osteotomy (Realignment Surgery) When malalignment overloads one knee compartment, an osteotomy (high tibial, distal femoral, or tibial tubercle) realigns the bone to redistribute load and protect cartilage repair or meniscal transplantation. Learn more → ### Arthritis Surgery When cartilage damage is too far progressed for repair, partial knee replacement (MAKO robotic-assisted), patellofemoral replacement, or the MISHA medial implantable shock absorber offer pain relief while preserving more native tissue than a total replacement. Learn more → ### Rotator Cuff Repair The rotator cuff can be injured acutely (a slip, fall, or impact) or through chronic repetitive stress. Tears are repaired arthroscopically through small incisions, avoiding open surgery. Learn more → ### Regenerative Medicine PRP injections for osteoarthritis pain — plus FDA-supervised clinical trials of investigational stem-cell and biologic implants. Honest framing of what cell therapies can and cannot do. Learn more → In detail ## Procedure detail Expand any procedure for a full explanation and, where available, a demonstration video. 1 Meniscal Surgery The meniscus is a horseshoe-shaped shock absorber sitting inside the knee joint between the articular surfaces of the femur and tibia. It is frequently damaged through acute or chronic injury. Dr. Gomoll discusses meniscus preservation in this video. Meniscus tears can be treated by partial removal, suture repair, or meniscal transplantation. Discover more about these procedures on our meniscal procedures page. 2 Ligament Surgery (ACL Reconstruction & BEAR Implant) Ligament tears are a very common sports injury. Some ligaments — like the MCL of the knee — heal on their own; others, most famously the ACL, frequently require reconstruction or repair. Dr. Gomoll explains ACL reconstruction graft choices in this video. Different ACL reconstruction techniques exist — using portions of your own hamstring, quadriceps, or patellar tendon, or donor graft. Which one is right depends on factors discussed at your office visit. A pooled study of multiple ACL trials found no significant differences in outcomes between hamstring and patellar tendon, but a higher complication rate with patellar tendon. Read the study. A separate review of 47,000 patients showed similar failure rates between patellar tendon (2.80%) and hamstring (2.84%) reconstruction. Read this study. More recently, the FDA-approved BEAR implant enables repair (rather than reconstruction) of select ACL tears. A collagen sponge is placed next to the injured ACL to support healing — no tendon harvest, no donor graft. Best candidates are patients with recent proximal ACL tears with good residual tissue. Dr. Gomoll has been using this technique since early 2022. Read more about BEAR. Read the full Ligament Surgery page → 3 Cartilage Repair Transcript people have asked what what's join preservation seems ill-defined in a nutshell I'm trying to keep a knee replacement out of you and me out of your life for as long as I can cartilage damage in your name it's a little bit like a pothole in a street and potholes are not great they're not great for your car they're not great for your knee joint and they can grow over time with all the preoperative workup MRI scans may be in our foster game we can figure out what would be best for in your specific situation and some patients they have an issue with the underlying bone so it's really the surface and the foundation underneath if you will one of the repair techniques is austere Colonel hella graft transplantation and that's essentially taking cartage as a plug of cartridge and going from a donor and transplanted that into the defect depending on where the defect is located in the knee you make your incision and you expose it so that you can see what you need to see it's not like the old days where we made gigantic incisions so luckily we can do this much more minimally invasive these days we look at the defect and first we get a sense of how biggest it affects the next step then is preparing the cartilage defect that scent is pouring out the the area of damage and then essentially go to the graft make a plug off cartridge and bone and when the graft is prepared to take some of your bone marrow I add that to the graphed and then the instrumentation such that you really get what's called press fit to fixation so nine out of ten times I don't need any screws or little darts to stabilize things the plug just goes into the recreated hole and a stable and then over time your body grows in and makes it your own it's gently days your dream unless we do other bigger things at the same time and you end up on crutches for about four weeks but you can move your name patients often ask isn't there risk of rejection can I get a disease from the donor and luckily air both that risk is very very low and especially on the disease side almost non-existent nothing is 0% unfortunate life but I always tell patients at least driving to the hospital is more dangerous than having the surgery and success rate long term is very good so depending on your specific situation could be anywhere between 80 and 95 percent success even up to 20 years you Cartilage is the smooth articular surface where two bones meet to form a joint. It can be damaged through acute trauma, developmental abnormalities (such as osteochondritis dissecans), or chronic degeneration. Localized damage is called a focal cartilage defect; widespread loss is termed osteoarthritis. Multiple techniques address focal cartilage defects: MACI, osteochondral allograft, OATS, microfracture, and investigational stem-cell trials. For widespread bone-on-bone arthritis, partial or total knee replacement is appropriate instead. Discover more on our cartilage repair page. 4 Osteotomy (Realignment Surgery) When the legs are straight, forces across the knee joint are evenly distributed. When alignment is off — congenitally, after trauma, or due to degeneration — the resulting malalignment can accelerate cartilage wear in the overloaded compartment. Osteotomy procedures address this by cutting and realigning the bone, then holding it in place with a plate until it heals. The plate can later be removed in a simple outpatient procedure. Common variants are high tibial osteotomy (HTO), distal femoral osteotomy (DFO), and tibial tubercle osteotomy (TTO) — the latter for patellar maltracking and instability. See David Goggins discussing his HTO performed by Dr. Gomoll on the Joe Rogan Experience and Jennifer's HTO + ACL reconstruction success story. Read the full Osteotomy page → 5 Arthritis Surgery Transcript [Music] preserving your options is really important when you're young so ideally I try and avoid knee replacements if I can now there are some patients who have bone-on-bone arthritis they've had multiple operations they've failed and they're tired they want something like in the ear placement and when to cross over that's a longer discussion we look at your images we look what has been done what has been tried and frankly we discuss what your goals are so in terms of knee replacement surgery there are different types of New York placements there's the standard knee replacement that's a complete knee replacement so ultimately today we replace all the surfaces inside your knee joint and then there are partial knee replacements partial knee replacements are just one part of unity and if you think about your knee almost as having three different sections it's like a tricycle with three wheels just because your first fight is in one part of your knee it doesn't mean that you have to have a full set of new tires partial knee replacements one technique that I've been using for a while is called Mako I use a robot in the operating room that helps you make the cuts more precisely because we're trying to remove the least amount of bone to preserve more of your whole name essentially we get a CT scan pre-op and based on the CT scan we make a 3d computer model and that gets fed into the robot and then the first job in the operating room is to tell the robot where your knee is in space it doesn't really have eyes that cannot see your extremity itself but we secure these little pegs with little reflective balls and the robot camera can see the reflective balls and then you move the knee so the robot gets a sense of your range of motion the joint position and then it shows me specific points on the the 3d model in its brain and I tap those same corresponding points on the patient so that after tapping 2030 points the robot then knows exactly where your mean and the structure of the music space so that it can guide me and help make those cuts more precisely partial knee replacements are nice because you preserve more of your own medium she's going to replace one part it feels more natural the emotions better the recovery is a little bit quicker so whenever I can I try and do that rather than a full knee replacement you want to stay active for as long as we can so it's really important for me to make sure as I get older when I have issues that arise orthopedically including surgery that I'm very comfortable with who's going to be my partner in terms of going through what can be a life altering process to make sure I'm able to resume those activities as quickly as possible [Music] you Sometimes cartilage damage is too far progressed for cartilage repair — particularly in bone-on-bone arthritis. In these cases, knee replacement surgery offers reliable pain relief, either through partial or total replacement of the knee joint, or the MISHA medial implantable shock absorber for selected medial-compartment cases. Discover more on our arthritis surgery page. 6 Rotator Cuff Repair The rotator cuff is the most important system of muscles and tendons for shoulder function. The cuff can be injured acutely through trauma — for example, slipping on black ice and landing hard on the arm — or through years of repetitive stress. Most tears can be repaired arthroscopically through small portal incisions, avoiding large open incisions. For shoulder rehab protocols after rotator cuff repair, biceps tenodesis or tenotomy, and arthroscopic instability repair, see our shoulder rehab protocols page. Read the full Rotator Cuff Repair page → Next steps ## Plan your visit - About Dr. Gomoll — full credentials, training, and clinical focus - Documented case studies — intra-operative photographs and outcomes - Before-surgery checklist — preparing for an upcoming procedure - Active clinical trials — participate in advancing the field - Imaging — what to bring before your visit ## Ready to discuss treatment options? Schedule a consultation with Dr. Gomoll at HSS — most new patients are seen within 1–2 weeks. Schedule a Consultation Call 646-917-7441 --- ## Publications: Books and Research | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/publications-1/ Summary: Dr. Andreas Gomoll has authored 5 books and 170+ peer-reviewed articles on sports medicine, cartilage repair, biologic joint reconstruction, and joint preservation. Full PubMed list available. Dr. Gomoll has been involved in clinical and basic-science research for over 20 years, with a focus on improving patient outcomes and reducing morbidity. His full list of peer-reviewed publications is available on PubMed (link below), and he has also authored five books on cartilage repair, biologic joint reconstruction, sports medicine, and joint preservation. ## Peer-reviewed articles on PubMed The button below links to Dr. Gomoll's complete and continuously updated list of publications: Dr. Gomoll's publications on PubMed → For citation index, h-index, and co-authorship views, see Dr. Gomoll's Google Scholar profile. ## Books Dr. Gomoll has authored or co-edited five books on the topics of sports medicine, cartilage repair, biologic joint reconstruction, and joint preservation: ## Related research and clinical work - Actively enrolling clinical trials — Hyalex EFS and recently completed studies - Research mission — the goals behind our basic and clinical work - Profiles & research links — HSS, Weill Cornell, Google Scholar - About Dr. Gomoll — full bio with editorial roles and society memberships ## Interested in Dr. Gomoll's research? Browse the complete PubMed list or explore an active clinical trial. View PubMed List View Clinical Trials --- ## Shorts: Quick Discussions with Dr. Strickland | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/shorts/ Summary: Short video discussions between Dr. Andreas Gomoll and Dr. Sabrina Strickland — partial knee replacement (MAKO), MISHA, MPFL reconstruction, TTO, patellar instability, ACL tears, and joint preservation. Dr. Gomoll's collection of short video discussions with Dr. Sabrina Strickland — covering partial knee replacement (MAKO and MISHA), MPFL reconstruction, tibial tubercle osteotomy (TTO), patellar instability, ACL surgery decisions, joint preservation, and meniscus tears. Watch ## All shorts ### MAKO Partial Knee Replacement Even though I am enthusiastic about joint preservation, sometimes the damage is just too much for cartilage or meniscus transplants. In the right patient, a partial knee replacement may be an alternative — I have been performing this for 20 years. The system I use most commonly is the MAKO system, which uses a CT scan for 3D planning and a surgical robot to make me more precise during the procedure. ### The MISHA Knee Implant A relatively new option for medial arthritis of the knee. I have worked with the company for over 10 years, helped refine the surgical technique for implantation, and participated in their FDA trial. It's very rewarding to see something develop from the design stage to clinical use. ### MPFL Reconstruction One of the most common techniques to stabilize a patella that keeps coming out is a procedure called MPFL reconstruction. ### Tibial Tubercle Osteotomy (TTO) Another procedure to stabilize a patella, or address patellar maltracking and patella alta, is tibial tubercle osteotomy (TTO). We move the attachment site of the patellar tendon on the tibia (shinbone) to a better position. ### Patellar Instability What is patellar / kneecap instability and what can be done about it? ### Do ACL Tears Need Surgery? Lindsey Vonn just tore her ACL, yet she plans to compete. When do you do ACL surgery versus conservative management? ### Joint Preservation versus Joint Replacement My specialty is knee preservation. Considering how well Lindsey Vonn is doing with a partial knee replacement, why should anyone bother with preservation — osteotomy, meniscus, and cartilage transplantation? I discuss how maximizing your future treatment options makes sense for many patients, especially the young. ### Sabrina and I Introducing Ourselves A short introduction to Dr. Strickland and me, and our approach to joint preservation. ### What Is Joint Preservation and Why Does It Matter? A primer on what joint preservation means and why it can change the long-term outcome for younger patients. ### What About Meniscus Tears? A short discussion on meniscus tears, what types are most common, and when surgery is indicated. ### Some Meniscus Tears Can Be Repaired Some types of meniscus tears can be repaired, rather than just trimmed — preserving more of the natural meniscus. × Go deeper ## Want more depth on these topics? - Cartilage repair — surgical options including MACI, OATS, and osteochondral allograft - Meniscal procedures — meniscal repair and transplantation - Surgical treatments — complete procedure list - Full-length videos — surgical demonstrations and lectures - In the news — CBS, ABC, ESPN, and Joe Rogan features ## Want to discuss your case? Schedule a consultation with Dr. Gomoll to talk through which approach fits your situation. Make an Appointment Call 646-917-7441 --- ## Surgical Procedures Explained: External Resources | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/surgical-procedures-explained/ Summary: Further reading on orthopedic conditions and procedures from NYU Langone Orthopedic Center and the American Academy of Orthopaedic Surgeons (AAOS) — curated by Dr. Andreas Gomoll. Below are detailed explanations of the procedures Dr. Gomoll performs, plus links to trusted, authoritative resources for further reading. Dr. Gomoll specializes in cartilage, knee, and shoulder surgery with a focus on joint preservation — for his full treatment list, see our surgical treatments page. Explore procedures ## Dr. Gomoll's procedures explained Each page walks through who it's for, how it's performed, recovery, and frequently asked questions. ### Cartilage Repair MACI, osteochondral allograft, OATS, microfracture, and stem-cell techniques for focal cartilage defects. Learn more → ### Meniscal Procedures Meniscectomy, repair, and allograft transplantation — preserving as much healthy meniscus as possible. Learn more → ### Arthritis Surgery MAKO robotic partial knee replacement, patellofemoral replacement, and the MISHA shock absorber. Learn more → ### Regenerative Medicine PRP injections for osteoarthritis pain, plus FDA-supervised cartilage cell-therapy trials. Learn more → ### All Surgical Treatments The full list of knee & shoulder procedures Dr. Gomoll performs, including ligament and rotator cuff surgery. View all → ### Joint Preservation The philosophy behind delaying joint replacement through preservation surgery. Learn more → Further reading ## Trusted external resources Authoritative, independent sources covering a wide range of orthopedic conditions and treatments. ### NYU Langone Health Conditions and treatments explained by Dr. Gomoll's home institution, NYU Langone Health. nyulangone.org ### AAOS OrthoInfo The American Academy of Orthopaedic Surgeons' patient-facing site, with detailed information on orthopaedic conditions and treatment options. orthoinfo.org ## Have a specific question? For information on whether a procedure is right for you, schedule a consultation with Dr. Gomoll directly. Make an Appointment Call 646-917-7441 --- ## Videos: Lectures and Surgical Techniques | Andreas H. Gomoll, MD Source: https://andreasgomollmd.com/videos/ Summary: Educational videos by Dr. Andreas Gomoll — lectures on joint preservation and surgical demonstrations of fresh osteochondral allograft (OATS / Mega-OATS) techniques. Dr. Gomoll's video library includes a full HSS lecture on the benefits of joint preservation and surgical-technique demonstrations of fresh osteochondral allograft (OATS) and Mega-OATS dowel-technique transplantation. For shorter discussions on patellar instability, MAKO and MISHA implants, MPFL reconstruction, and ACL surgery, see our shorts page. Watch ## Video library Surgical-technique demonstrations and a full lecture on joint preservation. Click any video to watch. Live Surgery ### Pre-Made Fresh Osteochondral Allograft Plug — Live Surgery Surgical technique demonstrating a pre-made fresh osteochondral allograft plug. Live surgery footage. Watch on YouTube → Surgical Technique ### Fresh Osteochondral Allograft (Dowel / Mega-OATS) Technique Technique for larger fresh osteochondral allograft transplantation using the dowel (also called Mega-OATS) technique. Surgical demonstration in a cadaver knee. Watch on YouTube → Lecture ### Dr. Gomoll's Lecture on the Benefits of Joint Preservation Full lecture hosted on the HSS Mediasite platform. Click to watch on the HSS site. Watch on HSS → Keep exploring ## More from Dr. Gomoll ### Shorts → Brief discussions with Dr. Strickland on MAKO, MISHA, MPFL, TTO & patellar instability. ### In the News → Press features on CBS, ABC, ESPN, and the Joe Rogan Experience. ### Success Stories → Patient video testimonials and recovery journeys. ### Publications → Full PubMed list and Dr. Gomoll’s books. ## Have questions about a procedure you saw? Schedule a consultation to discuss whether one of these techniques is right for you. Make an Appointment Call 646-917-7441 --- # Contact ## Make an Appointment | Andreas H. Gomoll, MD | HSS, NYC Source: https://andreasgomollmd.com/appointment/ Summary: Book a consultation with Dr. Andreas Gomoll at the Hospital for Special Surgery in New York. Request an appointment online or by phone. Main office at 333 East 38th Street, 4th Floor. ## Book Your Appointment Online Book directly through NYU Langone Health. Book online at NYU Langone See Dr. Gomoll’s live openings and schedule your new-patient visit directly through NYU Langone Health. Book at NYU Langone Health Scheduling around travel, or need help booking? Call (646) 917-7441 and the office will point you in the right direction. Before your first visit ## What to Bring & What to Know What should I bring to my first appointment? Bring a photo ID and your insurance card. Just as important, bring any outside imaging on a disk or CD — or the actual MRI or X-ray images, not only the written report. Dr. Gomoll needs to review the images themselves. Where is the office, and how do I get there? The office is at the NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor, New York, NY 10016, in Midtown Manhattan. See the locations page for a map, travel, and lodging information. How soon can I be seen? Most new patients are seen within 1–2 weeks. Out-of-town and international patients are welcome — call (646) 917-7441 if you need help coordinating travel around your appointment. How do I prepare if I'm already scheduled for surgery? Review the pre-operative checklist, and read about Dr. Gomoll's background and the surgical treatments he performs so you can come prepared with questions. ## Ready to schedule? Most new patients are seen within 1–2 weeks. Out-of-town and international patients are welcome. Call 646-917-7441 --- ## Contact Dr. Andreas Gomoll | NYU Langone, New York Source: https://andreasgomollmd.com/contact/ Summary: Contact Dr. Andreas Gomoll at NYU Langone Orthopedic Center, 333 East 38th Street, 4th Floor, New York, NY 10016, New York. Send a message online, call 646-917-7441, get directions, and find travel & lodging for out-of-town patients. Call the office (646) 917-7441 Visit us NYU Langone Orthopedic Center 333 East 38th Street, 4th FloorNew York, NY 10016 Office hours Mon – Fri: 8:00 am – 5:00 pm Sat: By appointment | Sun: Closed Call (646) 917-7441 Request an Appointment Directions & parking → ## Send Us a Message We respond within one business day. For urgent matters, call the office directly. Find us ## Main Office — NYU Langone Orthopedic Center This is the main office for patient appointments and on-site radiology / imaging. NYU Langone Orthopedic Center 333 East 38th Street, 4th Floor New York, NY 10016 Get directions on Google Maps → From out of town ## Travel and Lodging If you are coming from out of town, the NYU Langone Orthopedic Center is in Midtown Manhattan, a short distance from Grand Central and Penn Station, with parking and public-transit directions listed on the center's own page: - NYU Langone Orthopedic Center — getting here, parking, and visitor information Call the office at 646-917-7441 if you need help coordinating travel, lodging, or imaging around your appointment. Helpful links ## Plan Your Visit #### Make an Appointment Request a consultation online or by phone. #### Location & Directions Map, travel, and lodging for the NYU Langone office. #### Imaging What to bring or upload before your visit. #### About Dr. Gomoll Credentials, training, and clinical focus. ## Ready to reach out? Most new patients are seen within 1–2 weeks. Out-of-town and international patients are welcome. Call 646-917-7441 ---