Total hip arthroplasty(THA)for the treatment of end-stage osteochondritis dissecans(OD)of the femoral head

Osteochondritis dissecans(OD)is an idiopathic,localized disorder where articular cartilage and subchondral bone become separated and fragmentized from the articular surface[1-2]This unusual disease usually affects the distal part of the femur,humerus and ankle[3].However,OD of the femoral head is rarely seen which was generally and typically reported as a complication of Perthes' disease or congenital dislocation of the hip[4-5].