The ligaments in the leg are important structures around the joints. They are fibrous connective tissues that often stop at the two bony ends of the joints and can play a role in stabilizing the joints, preventing them from swaying, and preventing them from turning inside out. If the ligaments in the leg are torn due to various reasons, such as sprains or violent injuries such as traffic accidents, they should be treated early. If treatment is not timely or incorrect, instability of the knee or other joints can occur, and symptoms of joint weakness can occur, often requiring surgery again and often leaving sequelae, so the ligaments in the leg are very important to people and should be actively protected.