Sodium Vitrate Injection is mainly indicated for patients with osteoarthritis of the knee and periarthritis of the shoulder, the hazards of which include swollen and painful joints, joint infections, and allergic reactions. In addition, it is forbidden for patients who are allergic to the ingredients of this product. 1. Joint swelling and pain: Sodium vitrate is applied to the joint cavity, but accidentally injected into other parts of the body, it can easily cause joint swelling and pain as well as pain in the area around the joint. 2. Joint infection: Sodium hyaluronate is usually injected into the joint cavity by puncture, if the patient has serious joint infection, the operation can not be absolutely sterile, it is likely to cause joint infection. The occurrence of joint infection is generally related to the strict aseptic operation. 3. Allergic reaction: some patients will have allergic reactions such as nausea, vomiting, skin itching and red rash after sodium vitrate injection. This product is usually used in hospitals by health care professionals.