Collapse of the femoral head usually suggests necrosis of the femoral head, and the surgical treatment of necrosis of the femoral head is usually not very risky. Surgery for necrosis of the femoral head varies according to the degree of necrosis and different surgical methods. The possible risks of surgery are as follows: 1. Bacterial infection: there are incisions in the surgery, which may enter the incision and cause bacterial infection. 2. Anesthesia accident: anesthesia accident and respiratory depression during or after surgery. 3. Postoperative hip pain: may cause traumatic hip arthritis and pain. 4. Vascular and nerve damage: surgery may cause damage to the surrounding blood vessels and nerves, bleeding or impaired movement. When femoral head collapse occurs, it is recommended to go to the hospital in time and have standardized treatment under the guidance of the doctor.