Replacement of the femoral head only refers to artificial femoral head replacement, i.e., hemiarthroplasty. Hemiarthroplasty and total hip replacement are not better, but need to be chosen according to the actual situation of the patient. Half hip joint replacement refers to total hip joint replacement 1.Half hip replacement: it means to keep the acetabulum and only replace the femoral head. It is suitable for simple femoral neck fracture, meanwhile, the patient is old and in poor physical condition, without serious osteoarthritis, and the acetabular form is well preserved, so you can consider hemi hip replacement, which is less traumatic and less expensive. 2. Total hip replacement: it refers to the replacement of both acetabulum and femoral head. It is suitable for patients with severe osteoarthritis and serious destruction of acetabular morphology, and total hip replacement must be carried out to ensure the recovery of hip joint function after surgery. It is recommended that the choice of hip replacement surgery be made under the guidance of a doctor and according to the patient’s condition and his own physical condition.