Artificial joint surgery generally refers to artificial joint replacement, and its indications include traumatic arthritis, rheumatoid arthritis, degenerative osteoarthritis, etc. Whether or not to choose this surgery should be clarified after diagnosis by the doctor. 1. Traumatic arthritis: Osteoarthritis caused by changes in the structure and function of articular cartilage after traumatic injury, which may include joint pain, dysfunction of activities, etc. In severe cases, friction sounds may appear in the joints during activities, and complications may easily arise. Artificial joint replacement is effective in eliminating joint pain and improving joint function. 2. Rheumatoid arthritis: it is a kind of allergic disease, the cause of which is usually related to group A streptococcus infection, often symmetrically affecting the joints of knees, ankles, shoulders, wrists, elbows, hips and other joints, with localized redness, swelling, heat, pain and other manifestations. If there is obvious joint dysfunction, artificial joint replacement can be chosen according to the condition. 3. Degenerative osteoarthritis: Most of the degenerative osteoarthritis is caused by the aging of joint cartilage with the age, the bones are aging and being worn out, and the clinical manifestations are slow development of joint pain, pressure and pain, stiffness, joint swelling, etc., which can be treated by artificial joint replacement. Whether or not to perform artificial joint replacement needs to be judged according to the patient’s actual situation and needs to be evaluated by a specialized physician. After artificial joint replacement surgery, patients should pay attention to rest more, drink more water, eat more vegetables and fruits, strengthen nutrition, and avoid smoking and drinking.