Sodium vitrate for knee can not be played often, need to be used in accordance with the course of treatment, pay attention to the aseptic operation, to prevent infection in the joint cavity. 1. Sodium vitrate is commonly used in the treatment of early and mid-stage osteoarthritis, because sodium vitrate is the main component of synovial fluid, which plays a lubricating role in the joint cavity, and covers and protects the articular cartilage. It is usually injected once a week for five weeks as a course of treatment. 2. For severe osteoarthritis of the knee joint, the cartilage is worn out seriously, even if the injection of sodium vitrate, the effect is not ideal. Frequent injection of sodium vitrate will easily lead to breakage of the skin surface, and bacteria will infect the joint through the puncture point. If accompanied by diabetes, the weaker the body, the more likely to be infected, the infection of the joint is difficult to self-healing, resulting in a long treatment time, if necessary, surgical debridement treatment. After treatment with sodium vitrate, it is important to pay attention to the maintenance of the knee joint to avoid pain and infection. If you really need to inject sodium vitrate, go to a regular hospital under the guidance of a physician.