Femoral joint replacement surgery is correctly referred to as hemiarthroplasty, and the indications are mainly femoral neck fractures and femoral neck tumors. Hip joint includes femur and acetabulum, hemiarthroplasty is usually the replacement of the femoral side, replacement for artificial femoral head prosthesis. Tumors such as benign tumors of the femoral neck that should not be scraped and implanted, primary or metastatic malignant tumors of the femoral neck, and so on. The above are some of the indications, the specific need to go to the hospital according to the condition of the professional doctor to judge.