Patients with femoral head related lesions may show symptoms such as pain, activity limitation, and limb shape change, as follows: First, pain: patients will first have pain symptoms centered on the affected hip joint, such as swelling and pain in the depth of the hip joint on the affected side, and a part of the patients may also have pain in the affected thigh, knee joint, or hip. Second, activity limitation: these patients may have obvious activity limitation, for example, after the onset of the disease, patients are often not able to carry out intense sports, and in the case of severe lesions, even completely unable to go down to the ground weight-bearing activities. Third, limb appearance changes: this kind of patients may have limb appearance changes, such as may appear on the affected side of the lower limb shortening of the situation, the patient’s gait may also gradually show claudication.