Sodium vitrate can relieve the symptoms of mild to moderate meniscal injuries. Sodium vitreous acid, also called sodium hyaluronate, is a polymeric polysaccharide biomaterial. Sodium vitreous acid is mainly used in orthopedics to treat bone and joint diseases. Sodium vitrate is the main component of synovial fluid and is one of the components of cartilage matrix. Strain and cold cause abnormal synovial membrane function in the joint cavity, reducing the content of sodium vitrate, decreasing the lubricating effect and increasing the wear and tear of joint cartilage, resulting in pain and mobility disorders. Supplementation of exogenous sodium vitrate can increase the content of sodium vitrate in synovial fluid, replenish viscoelastic substances to prevent further destruction and disappearance of cartilage matrix, reduce or eliminate joint wear and pain, while sodium vitrate enters the cartilage matrix and forms polymer with glycoprotein to repair the damaged cartilage, so sodium vitrate is helpful for mild to moderate osteoarthritis and meniscal injury. The meniscus is a kind of fibrocartilage in the knee joint cavity, one on the inside and one on the outside. After meniscal injury, the meniscus can heal except for the edge area where the blood supply is good, but the part in the center is difficult to heal by itself because of the poor blood supply. The intra-articular injection of sodium glass can increase intra-articular lubrication, reduce the stress stimulation of the meniscus, improve the nutrient composition of the meniscus, and have a positive effect on promoting meniscal repair. However, in severe meniscal injuries, the stability of the meniscus is severely damaged and surgical intervention is required, at which time it is difficult to achieve good results with sodium vitrate injection.