part of part of adjacent to adjacent to acetabular part of hip bone proximal epiphysis of femur zone of long bone head of femur galen:FemoralHead MESH:D005270 Wikipedia:Femur_head femoral head FMA:32851 MA:0003050 The hemispheric articular surface at the upper extremity of the thigh bone[Stedman, 26th ed]. The femur head is the highest part of the thigh bone. It is supported by the neck of the femur. The head is globular and forms rather more than a hemisphere, is directed upward, medialward, and a little forward, the greater part of its convexity being above and in front. Its surface is smooth, coated with cartilage in the fresh state, except over an ovoid depression, the fovea capitis femoris, which is situated a little below and behind the center of the head, and gives attachment to the ligament of head of femur. If there is a fracture of the neck of the femur, the blood supply through the ligament becomes crucial. In orthopedic surgery, the head of the femur is important because it can undergo avascular necrosis and consequent osteochondritis dissecans. The head is removed in total hip replacement surgery [WP]. acetabular head SCTID:361791000 capital femoral epiphysis AAO:0000892 femur head UBERON:0006767 NCIT:C32718