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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.

  • 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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  • 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)
    Stem Cell Treatments
    Fat Cell Therapies

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John G Kennedy MD
  • AWARDS
  • 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. John Kennedy graduated from Royal College of Surgeons in 1989 and has since practiced in both Ireland & the U.S. He specializes in osteochondral injuries, Achilles tendon injuries, ankle instability, and ligament reconstruction and has a primary interest in lower limb surgery, particularly sports-related injuries.

Dr. Kennedy’s interest in sports medicine of the lower limb is generated by a long personal history in sports. where he competed at National and International levels in track, rugby, fencing, and water skiing.

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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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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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  • 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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Stories From Our Patients

  • Before I came to Dr. Kennedy after my first Achilles surgery, I practically lost all hope. He litera...

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    ~Anonymous ~

  • I cannot thank you enough for Dr. Kennedy. You literally got me back on my feet again! Your treatmen...

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    ~Melissa ~

  • Good morning Dr Kennedy,


    Today has been day five that I wake up and go cross countr...

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    ~Courtney ~

  • Joseph: Peroneal Surgery


    I have been an athlete throughout my enti...

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    ~Joseph ~

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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

    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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