Avascular necrosis of the femoral head may lead to surgery to replace this joint
It is 
also difficult to say how much it still hurts with the new joint as the... [DOC] [TLE] Avascular necrosis - Wikipedia [PAR] Avascular necrosis (AVN), also called osteonecrosis, bone infarction, aseptic 
necrosis, and ... Specimen from total hip replacement surgery.