Purpose of Review
Osteonecrosis of the femoral head (ONFH) is a common and frequently occurring disease. It is caused by interruption of blood supply with different etiologies. ONFH leads to degeneration and necrosis of the subchondral bone of the femoral head and eventually collapse of the femoral head. ONFH has a high disability rate, seriously affecting the quality of living of patients, and often involves middle-aged and younger people.