The treatment of femoral head necrosis is a worldwide problem. It is usually believed that the necrotic femoral head cannot be restored to normal bone structure, and all treatment can only try to slow down the development of the disease and postpone the time for total hip replacement. What we usually call early necrosis of the femoral head is the stage I, stage II and some stage III patients of femoral head necrosis, because these patients often have very small changes in their X-rays and are often ignored and misdiagnosed. In the early stage, our management of femoral head necrosis is simply to reduce weight bearing and then consider artificial joint replacement after the femoral head has collapsed. It is now believed that purely protective weight-bearing is not an appropriate treatment no matter how long it is used and will not cure femoral head necrosis. The best preventive measures for femoral head necrosis should be early prevention, early detection and early intervention. Commonly used surgical treatment methods to intervene in early femoral head necrosis are mainly composed of the following: 1. Medullary core decompression surgery. Medullary core decompression surgery is an accidental discovery that has been a controversial, though widely used, means of treating ischemic necrosis of the femoral head. After drilling a hole into the femoral head with a hollow drill bit through the greater trochanter, the diagnosis of femoral head necrosis was made by measuring the pressure of the bone marrow cavity, water injection pressure test, intra-medullary venography and medullary core biopsy, and it was found that the pain could often be relieved immediately after surgery, so the diagnosis was turned into a treatment method called medullary decompression, which is believed to relieve pain and reduce the pressure of the femoral head and cervical medullary cavity. At present, it is believed that medullary core decompression can relieve pain within a certain period of time, but it cannot slow down the development of the disease process, and decompression is likely to accelerate the speed of the collapse process. 2. Bone grafting surgery and fibula grafting with vascular tips. There are two types of bone graft surgery, one is the fibula graft surgery without blood vessels. The other is the fibula graft with vascularization, which was started in 1979 by Brunelli and Brunelli in Italy and Urbaniak in the United States for the treatment of femoral head necrosis. This is a procedure that was developed on the basis of the development of microsurgery. Theoretically, fibula grafting can reduce the pressure in the femoral head, remove dead bone from the femoral head, fill the defect with cancellous bone, induce new bone production, and fill the cortical bone column to support the subchondral bone and. Vascularized fibula grafting also accelerates the process of recanalization, which is more conducive to the repair of the necrotic femoral head. It is generally accepted that fibular grafting with vessels is more effective than non-vascular fibular grafting, both clinically and radiologically, and is more effective in stage I and I1 cases. Vascularized fibula or iliac bone grafting is a microsurgical procedure that requires better equipment and experienced surgeons to perform the procedure.