In young patients with osteoarthritis who have heavy joint deformation caused by abnormal mechanical lines of force in the limb, they can be treated with osteotomy, which can improve the lines of force in the limb, thereby improving symptoms and delaying joint degeneration. For patients with severe joint damage and deformation, but the patient requires a fully weight-bearing joint, joint fusion should be considered; and for patients who urgently require a movable joint, artificial joint replacement can be considered, but patients should be clear that artificial joints have a certain life span, generally the life span of artificial prosthesis is 15-20 years, with the development of science and technology, artificial joint replacement technology is becoming more and more mature, and age is no longer a contraindication. Age is no longer a contraindication.