Jonathan Vigdorchik, M.D, Hip & Knee Surgeon, New York, Uniondale, NY ‖ Conditions Hip Conditions Osteoarthritis of the Hip Hip pain Hip dislocation Femoroacetabular Impingement Hip Injury Hip Labral Tear Hip Instability Avascular Necrosis Stress Fractures of the Hip Hip Synovitis View all Conditions Knee Conditions Knee Arthritis Knee Osteoarthritis Knee Pain Articular Cartilage Injury Meniscal Tears Osteochondral Defect of the Knee Osteonecrosis of the Knee View all Conditions