Choose a regular 3A hospital to see femoral head necrosis. If there is a corresponding 3A orthopedic specialist hospital in this city, it can be the first choice. The diagnosis of femoral head necrosis generally needs CT or MRI examination. The difficulty lies in judging the stage of the disease, which is also very important for treatment. Generally speaking, it is possible to recover from conservative treatment of femoral head necrosis in the middle and early stage, and it can be used in conjunction with hip preservation surgery in the middle and late stage, which can improve the success rate of hip preservation of femoral head necrosis.