When thigh bone head necrosis occurs, the current treatment can only slow down the condition, but will not be completely cured. Because necrosis of the thigh bone head is due to various reasons that cause the blood circulation of the femoral head to be damaged, causing the death of bone cells and bone marrow components, which ultimately leads to ischemic necrosis of the thigh bone head, collapse of the femoral head, and dysfunction of the hip joint, so it is very obvious that it is highly disabling. Although there are many kinds of hip-preserving surgical methods for thigh head necrosis, such as osteotomy, core decompression surgery, tantalum rod implantation, etc., which have achieved a certain degree of therapeutic effect, but there is no method with definite therapeutic effect that has been unanimously recognized by orthopaedic specialists, so when thigh head necrosis is in the advanced stage, the only way to achieve a more satisfactory result is to have a more satisfactory result by artificial hip replacement.