The treatment of osteoarthritis is a stepwise treatment. For patients with early joint hyperplasia, who only occasionally experience joint pain, the first step is to improve the symptoms by losing weight, keeping the joints warm, doing hot packs, doing physical therapy, baking electricity, and microwaving. If further development, joint hyperplasia, pain aggravation, these conservative treatment, physical therapy methods do not work, you can add drugs, such as taking ibuprofen, diclofenac sodium and other non-steroidal anti-inflammatory drugs to relieve the symptoms of pain and discomfort. If the effect of these drugs is not very good, and the joint is found to be severely enlarged by photography, and the degree of surgery is not reached or you do not want to operate, then you can do joint cavity injection, through the joint cavity injection of sodium vitreous acid, or now there are several butyl sugar joint lubrication injection into the joint, to play the role of lubricating the joint and nourishing the joint cartilage, many patients after these injections joint pain is reduced, joint activities are not heavy, also not Many patients have reduced joint pain after these injections, and their joints do not move heavily or hurt, and they do not stumble. Surgery can also be done, but not all at once. At first, we can do osteotomy to correct the force lines, which is called knee preservation surgery. Arthroscopic surgery can also be done to remove the free body inside the joint to relieve local symptoms, and in severe cases, unicondylar joint replacement can also be done. If the articular cartilage on the weight-bearing surface is worn out, either medially or laterally, and the patellofemoral joint is fine, partial joint replacement can be done to remove this part of the articular cartilage and replace it with a thin layer of metal underneath and a pad in the middle to solve the problem and correct the leg. In more severe cases, such as severe osteophytes with more than two compartments, a total knee replacement is required, where the upper cartilage and subchondral bone are partially removed, the lower side is replaced with metal, and a pad is added in the middle to solve the problem.