Sodium vitrate injection for knee meniscus injury is usually 3 to 5 injections for one course of treatment, and one course of treatment for one year is enough. Sodium vitrate can be injected into the joint cavity to lubricate the joint and protect the articular cartilage. Generally speaking, patients with meniscus injuries are recommended to take sodium vitrate injections in order to alleviate their conditions. If the degree of meniscus injury is not serious, a course of 3 to 5 injections is usually enough. If the injury is serious and the pain is obvious, the injection of sodium vitrate is not significant and surgical treatment should be considered. Sodium vitrate injection has the adverse reaction of triggering infection and allergic reaction, meniscus injury patients are recommended to inject sodium vitrate under the guidance of the doctor, so as to avoid excessive dosage of adverse reactions.