There are many unexpected situations during surgery, especially in the case of joint replacement surgery where the patient is elderly, and in case something happens during surgery, Shanghai Tenth Hospital is a comprehensive mega hospital that can handle it as fast as possible. Arthroscopy and total knee replacement is a team effort of the operator and three assistants, an instrumentation nurse, an anesthesiologist, and a traveling nurse totaling seven people. In Shanghai Tenth Hospital Sports Medicine, my team of 35 (simple surgery) to 55 minutes (complex surgery) can definitely get the artificial joint installed, but in a different setting, a multi-bundle takes 90 minutes or even longer. The longer the surgery, the greater the damage to the patient and the higher the infection rate. Also, the cleanliness level of operating rooms varies from hospital to hospital. The same level of cleanliness, management levels vary greatly, and poor management levels have an impact on the cleanliness of the surgery. Postoperative management is also important, including care within a few days after surgery and rehabilitation guidance before discharge 6 days after surgery, all of which will affect the incidence of complications and postoperative functional recovery.