A 70-year-old patient with femoral head necrosis can be treated with surgery under normal circumstances, because femoral head surgery is more traumatic and there is more intraoperative bleeding, so the patient should be evaluated and preoperative routine tests should be done, such as routine blood tests, biochemical blood tests and liver and kidney function tests. If all the above tests are done and there are no major physical problems, we can ask the anesthesiologist to take a look at the patient and if the patient can tolerate the anesthesia well during the operation, we can perform the surgery.