Treatment of osteoarthritis: You can continue to take some non-steroidal drugs, glucagon capsules, etc. orally under the guidance of an orthopedic surgeon; if there is joint effusion, the specialist should perform a puncture of the knee joint to extract the joint effusion and then inject sodium vitrate and other drugs once a week. If not, arthroscopic surgery is required; the so-called arthroscopic surgery is to remove the hyperplastic synovial membrane, remove the detached cartilage or synovial debris and flush the joint cavity under arthroscopic vision and then inject sodium vitrate to relieve or slow down the progression of the disease. As for the “complete treatment” of osteoarthritis of the knee, surface replacement of the knee is only performed when the osteoarthritis of the knee has progressed to the stage of severe arthritis. In other words, when the osteoarthritis is not treated with the conservative treatment and arthroscopic surgery mentioned above, and if more than one of the following occurs: (1) the knee gap becomes narrow or/and joint flexion/extension is limited, (2) the lower extremity has poor force lines (inversion or valgus deformity of the knee), (3) bone defects occur due to cystic lesions or other reasons, (4) knee flexion contracture deformity, (5) pain cannot be relieved by medication (5) pain that cannot be relieved by medication, etc.; only then should an artificial knee surface replacement be considered. However, there are many post-operative complications associated with artificial knee surface replacement, and experienced orthopedic surgeons will strictly control the indications for surgery. As for the prevention of aggravation or progression of osteoarthritis of the knee: (1) prohibit any knee flexion, extension or rotation exercises under weight; (2) avoid squatting toilets as much as possible and change to toilet seats (if there are no toilet facilities, buy a simple stool-type commode instead); (3) avoid kneeling down to work (such as floor polishing, Japanese hospitality, etc.); (4) obese people try to Weight loss. In short, there are many factors that contribute to the development of osteoarthritis of the knee, but the main cause is age and wear and tear, to prevent aggravation of the disease, we must try to reduce the burden on the knee joint, in layman’s terms: “Save it!” What if I want to exercise my diseased joints? It is recommended to do the appropriate counter-directional “empty pedal” bicycle-like exercise under non-weight-bearing conditions to increase the muscle strength of the quadriceps muscle to increase the stability of the knee joint and indirectly reduce the condition of osteoarthritis.