As the standard of living improves, the incidence of age-related diseases such as diabetes, coronary heart disease, and osteoporosis is increasing and trending younger, and osteoarthritis, like the above diseases, is also showing younger characteristics. The term osteoarthritis refers to degenerative changes in the joints, and is distinguished from rheumatoid arthritis, infectious arthritis, and gouty arthritis. The occurrence of osteoarthritis is related to joint injury, improper posture, overexertion, endocrine changes, etc. It is more common in female patients, and the age of onset is earlier, with many women in their 30s showing arthritis. Arthritis initially manifests as pain in the knee joints when walking up and down stairs, pain when standing up after sitting for a long time, and pain after walking for a long time. Symptoms of osteoarthritis should be treated early at a regular hospital orthopedic department. In mild osteoarthritis, there is no obvious change in the x-ray, so you can follow the first step of treatment, i.e., take drugs to protect the joints and repair the joint cartilage; in moderate osteoarthritis, mild osteophytes can be found in the x-ray, so you can follow the second step, i.e., minimally invasive treatment or surgery, intra-articular injection of joint-protective drugs or arthroscopic treatment; in severe osteoarthritis, severe osteophytes, joint gap narrowing and joint For severe osteoarthritis with severe osteophytes, narrowing of the joint space and joint deformation on X-ray, we can follow the third step, i.e. minimally invasive knee joint surface replacement surgery.