Researchers have found in a new study that patients receiving total hip arthroplasty (THA) for osteonecrosis of the femoral ...

Osteonecrosis develops when blood vessels ... further since the area normally fed by the injured vessels was the femoral head, or tip of the thigh bone, which sits directly inside the hip socket.

During the interval from 1991 through 1996, 23 hips in 18 patients (12 male and 6 female) with the diagnosis of AVN had arthroscopy of the hip with prospective follow-up at our institution.