Bones are living tissues and like all living tissues rely on blood vessels to supply them with blood to keep them alive. Most tissues have blood supply from different directions, and if one of the blood vessels is damaged there is no problem because there is a backup blood supply from other directions. The joints of the body, however, have only a few blood vessels that provide blood. This includes the hip joint. Osteonecrosis means that part of the bone tissue dies due to lack of blood supply. Femoral head necrosis is the necrosis of the bone tissue of the femoral head, also known as ischemic necrosis of the femoral head. It is a disease in which the blood supply to the femoral head is interrupted or damaged, causing the death and subsequent repair of bone cells and bone marrow components, which then leads to structural changes in the femoral head, collapse of the femoral head, and joint dysfunction. Since femoral head necrosis has a complex pathological process, if early treatment is not received in a timely and effective manner, the femoral head will collapse, narrowing the joint space and finally leading to osteoarthritis, causing disability and paralysis due to the dysfunction of the patient’s hip joint. While suffering from physical pain, patients also suffer from psychological trauma, which adds a heavy burden to the family, unit and society.