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Dr. Kennedy is a highly trained and experienced orthopedic surgeon specializing in the treatment of various injuries and conditions affecting the foot and ankle.

  • Nano Arthroscopy

    Nano arthroscopy is a type of arthroscopic technique performed with the help of an advanced imaging system called a NanoScope™.

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  • Shockwave Therapy

    Shockwave therapy is a non-invasive method that uses pressure waves to treat various musculoskeletal conditions.

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  • Regenerative Musculoskeletal Therapies

    Platelet Rich Plasma (PRP)
    Concentrated Bone Marrow Aspirate (CBMA)
    Hyaluronic Acid (HA)
    Stem Cell Treatments
    Fat Cells (Lipogems)

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  • OATS procedure

    OATS of the ankle is a surgical procedure to treat Osteochondral Lesions of the Talus (OCL) or Osteochondritis Dissecans (OCD).

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  • Foot & Ankle Arthroscopy

    Arthroscopy is a minimally invasive operation in a joint which is done by ‘keyhole.' A camera is inserted into the joint to look inside while small instruments.

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John G Kennedy MD
  • Royal College of Surgeons of England
  • Wounded Warrier Project
  • NYC Langone HEalth

John G. Kennedy MD, Mch, MMSc, FFSEM, FRCS (Ortho) john G Kennedy

Dr. Kennedy is a world renowned Foot and Ankle surgeon, and a leading expert in cartilage injuries. He co-founded the ICCRA, which has since set the gold standard in treatment alogorithms for ankle cartilage surgery. His interests include regenerative medicine and minimally invasive Nano-arthroscopy. Dr. Kennedy was the first surgeon to perform in-office Nano-arthroscopy. Currently, he is the chief of the Division of Foot and Ankle Surgery and Director of the Foot and Ankle Center at NYU Langone Department of Orthopedic Surgery. Dr. Kennedy continues to train surgeons from around the world and his research team has published over 250 peer-reviewed articles and presented over 2000 times around the globe.

Stories From Our Patients

  • My knee has been feeling great and I am more athletic than I have ever been in the past. I am happy everything went well with the surgery because if it wasn't for Dr. Kennedy, I would probably be incapable of walking without pain.

    - Joseph

  • I want to thank Dr. John and the whole staff at NYU! Because of the shockwave therapy not only was I able to run the NYC marathon, but I PR'ed by 41 minutes from my time last year!! It was an amazing day and I'm grateful to Dr. Kennedy, Jeremie and the whole team!!

    - Lindsey

  • I have been an athlete throughout my entire life and at the age of twenty-six, I was suffering from significant knee, ankle, and low back pain that simple NSAID's, ice, and rest could no longer help me with. I made an appointment with Dr. Kennedy this past November looking to find the root cause of my pain, and he and his team did not disappoint.

    - Joseph

  • Before I saw Dr. John Kennedy I had suffered years of ankle pain after 2 surgeries on my OCD lesions that were unsuccessful. As a dancer, choreographer and a very athletic person, this was a challenging time for me. I could not do my work as a choreographer and I could hardly walk 5 blocks in NYC without stabbing pain at every step.

    - laya

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Minimally Invasive Surgical Techniques

  • Foot & Ankle Arthroscopy

    Foot & Ankle Arthroscopy

    Arthroscopy is a minimally invasive operation in a joint which is done by ‘keyhole.'

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  • Toe Joint Arthroscopy

    Toe Joint Arthroscopy

    Toe joint arthroscopy is a minimally invasive procedure to treat conditions of the joints in your toe.

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  • Tendoscopy


    Tendoscopy is a procedure to see inside of a tendon sheath- very similarly to arthroscopy.

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  • Knee Arthroscopy

    Knee Arthroscopy

    Knee arthroscopy is a common surgical procedure performed using an arthroscope...

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Top 1% of All Orthopedic Researchers

John G. Kennedy

Dr. John Kennedy stands out as one of the preeminent figures in orthopedic research, ranking within the top 1% of orthopedic researchers in the United States. His groundbreaking contributions to the field, particularly in foot and ankle research, solidify his status as a luminary in orthopedics. Dr. Kennedy's innovative work, highlighted by Avant-garde Health, showcases his unwavering commitment to advancing the understanding and treatment of musculoskeletal disorders. His expertise spans a wide array of orthopedic domains, with a specific focus on foot and ankle pathology, where he has consistently pushed the boundaries of knowledge. Through his prolific research output and dedication to improving patient outcomes, Dr. Kennedy continues to shape the landscape of orthopedic medicine, earning him recognition as one of the foremost authorities in the field.

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Dr. Kennedy In the Media

  • Dr Kennedy In the Media Video

    Classification, Treatment & Biological Enhancement of Osteochondral Lesions in the Ankle

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  • Dr Kennedy In the Media Video

    Dr. Kennedy discusses the benefits of Needle Arthroscopy using the Nanoscope

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  • Dr Kennedy In the Media Video

    Dr. Kennedy's Approach to Orthopedic Surgery

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  • Dr Kennedy In the Media Video

    Return to sport post ankle injuries Osteochondral autograft transfer system technique

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Practice Expertise

  • Osteochondral Lesions

    Osteochondral Lesions

    Depending on the size and characteristics of your Osterochondral lesion, we have two different treatment options:

    • Reparative Treatment – Bone Marrow Stimulation (Stem Cell Therapies)
    • Replacement Treatment – Autologous Osteochondral Transplantation (OATS)
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  • Posterior Tibial Tendon Insufficiency

    Posterior Tibial Tendon Insufficiency

    The posterior tibial tendon is responsible for facilitating for patient’s to get up on their toes. It runs from the back of the calf around the inside of the ankle to the arch of the foot.

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  • Achilles Tendonitis/Tendonosis/Repair

    Achilles Tendonitis/Tendonosis/Repair

    Achilles tendinitis is the inflammation and irritation to the Achilles tendon, and occasionally the Achilles tendon sheath. The Achilles tendon is one of the strongest tendons in the body and is responsible for propelling us forward every step we take.

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  • Ankle Instability/Sprains/Tears

    Ankle Instability/Sprains/Tears

    The joints of the ankle are held in place and stabilized by strong bands of tissue called ligaments. Ankle instability is a chronic condition characterized by a recurrent slipping of the outer side of the ankle.

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  • Posterior Tibial Tendon Insufficiency

    Peroneal Tendon Insufficieny/Tendonosis

    This condition is often seen in patients with ankle instability but can present at any time with pain over the lateral or outer aspect of the leg associated with a snapping sensation.

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  • Hallux Rigidus/Hallux Valgus

    Hallux Rigidus/Hallux Valgus

    Hallux Rigidus is a form of degenerative arthritis affecting the big toe joint where the big toe (hallux) attaches to the foot. 1st MTP joint stiffness is common in many athletes as well as in the general population.

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Meet our Fellows
  • Christopher Murawski, MD

    Christopher Murawski, MD Orthopedic Surgery Resident, Pittsburgh, USA

  • Youichi Yasui, MD

    Youichi Yasui, MD Professor of Orthopedic Surgery, Teikyo University Link

    Manabu Tsukamoto

    Manabu TsukamotoAttending Foot and Ankle Surgeon, University of Occupational and Environmental Health, Japan Link

    Song Ho ChangTokyo University, Japan Link

    Ichiro TonogaiJapan Link

  • Nialll Smyth, MD

    Nialll Smyth, MDOrthopedic Surgeon, Cleveland Clinic

    Nikolas Baksh

    Nikolas BakshAttending Foot and Ankle Surgeon, Loyola Medicine, Illinois, USA

  • Ian Savage-Elliott, MD

    Ian Savage-Elliott, MD Attending Foot and Ankle Surgeon, New Orleans, USA

  • Keir Ross, MD

    Keir Ross, MDOrthopedic Surgery Resident, NYU School of Medicine

    Nate Mercer

    Nate MercerOrthopedic Surgery Resident, NYU, New York City, USA

  • Charles P. Hannon, MD, MBA

    Charles P. Hannon, MD, MBA Attending Foot and Ankle Surgeon, Washington University, St Louis, Missouri, USA Link

  • Andrew Ross DO

    Andrew Ross DOOrthopedic Surgery Resident, Hofstra Northwell School of Medicine Link

  • Robin Megill, MD

    Robin Megill, MD Professor of Orthopedic Surgery, Kyoto University

  • Lucas Myerson, MD

    Lucas Myerson, MDOrthopedic Surgery Resident, University of Pennsylvania Health System Link

  • Max Coale, MD

    Max Coale, MDOrthopedic Surgery Resident, University of Washington Link

  • Rebecca Irwin, PhD

    Rebecca Irwin, PhDPostdoctoral Associate, Cornell University College of Veterinary Medicine

  • Arianna Gianakos

    Arianna Gianakos DOAttending Foot and Ankle Surgeon, Yale School of Medicine, New Haven, Massachusetts, USA Link

  • Eoghan Hurley MB/BCh/BAO, MCh

    Eoghan Hurley MB/BCh/BAO, MChOrthopaedicSenior House Officer (SHO), Mater Misericordiae University Hospital

    Sean Flynn MB/BCh/BAO, MCh

    Sean Flynn MB/BCh/BAO, MChOrthopaedic Specialist Registrar (SpR), University Hospital Waterford

    Mr Padhraig O'Loughlin

    Mr Padhraig O'LoughlinMater Private, Cork, Ireland Link

  • Rosa RamirezOrthopedic Surgery Attending, Barcelona, Spain

  • Dexter Seow

    Dexter SeowOrthopedic Surgery Resident, National University Hospital, Singapore

  • Ethan Fraser

    Ethan FraserOrthopaedic and Trauma Surgery Registrar, John Hunter Hospital

    Jeff Ling

    Jeff LingAttending Foot and Ankle Surgeon, SOSFAI, Sydney, Australia Link

  • Steven ParkinsonOrthopedic Surgery Attending, New Zealand Link

  • Gabriel Dinu

    Gabriel DinuAttending Foot and Ankle Surgeon, Spitalul Monza, Hungary Link

  • Ashraf FansaOrthopedic Surgery Attending, Cairo, Egypt

    Amgad HaleemCairo, Egypt Link

    Mostafa Abousayed

    Mostafa AbousayedAttending Foot and Ankle Surgeon, University Orthopedics, Massachusetts, USA Link

  • Igrit KahnTurkey

  • Hunter Newman

    Hunter NewmanAttending Foot and Ankle Surgeon, Duke, North Carolina, USA

  • John Pinski

    John PinskiAttending Foot and Ankle Surgeon, Resurgens, Georgia, USA Link

  • Laura Ramponi

    Laura RamponiAttending Foot and Ankle Surgeon, Istituto Ortopedico Rizzoli, Italy Link

    Alberto MarangonItaly Link

    Eugenio ChiarelloItaly Link

  • Lorraine Boakye

    Lorraine BoakyeAttending Foot and Ankle Surgeon, Penn Medicine, Pennsylvania, USA

  • Marcelo Pires Prado

    Marcelo Pires PradoAttending Foot and Ankle Surgeon, Hospital Albert Einstein, São Paulo, Brazil Link

  • Hugo UbillusPeru

  • Eduardo SueroDominican Republic

  • Pim van Dijk

    Pim van DijkUniversity of Amsterdam

  • Christopher HodgkinsEngland Link

  • Angelika HeinrichGermany

    Leoni KostersGermany

  • Microfracture

    Bone Marrow Stimulation

    This procedure is indicated for smaller lesions and can be done arthroscopically. Multiple holes are made in the exposed bone and they allow bone marrow stem cells.

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  • Autologous Osteochondral Transplantation

    Autologous Osteochondral Transplantation (OATS)

    This procedure is an osteochondral replacement technique by inserting a cylindrical graft and indicated for larger lesions or large cystic lesions.

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Follow Dr. Kennedy on Social Media
  • Instagram

    Two years ago, Bobby came into our office to repair his ruptured.

  • YouTube

    Biological Enhancement in the Treatment of Osteochondral Lesions of the Talus.