1. Is artificial joint replacement safe? Currently, the overall success rate of artificial joint replacement is very high, over 90-95%, but there are cases of failure, not 100%. Liu Pengcheng, Department of Orthopedics, Xinjiang Uygur Autonomous Region Hospital of Traditional Chinese Medicine 2. Artificial joint replacement is the primary choice for end-stage bone and joint disease and has an irreplaceable effect on restoring joint function. 3. Is there an age limit for artificial joint replacement surgery? Age reflects the functional status of all organs in the body. A detailed preoperative evaluation is performed on each patient to determine whether there are any contraindications to surgery. At present, the maximum age for joint replacement in our department is 88 years old for knee replacement and 93 years old for hip replacement. 4. Is the cost of artificial joints reimbursed? At present, artificial joints in Xinjiang are covered by medical insurance and are reimbursed by the corresponding medical insurance policy.