Adult femoral head necrosis, also known as aseptic necrosis of the femoral head or ischemic necrosis of the femoral head, is a type of osteonecrosis. The main artery supplying the femoral head and femoral neck in adults is the supporting zone artery formed by the branches of the medial and lateral rotor femoral arteries, which are fragile and close to the femoral neck. Osteonecrosis is the result of damage to the blood vessels of the bone support zone, ischemic degeneration of the bone matrix and necrosis, further development of femoral head collapse and cystic degeneration, secondary degeneration of articular cartilage and formation of bone redundancy, leaving painful osteoarthritis and resulting in loss of hip function. If the treatment is not timely, it may lead to lifelong disability. This causes great pain to patients and their families.