Tearing of the ligaments following an ankle sprain is a condition that must be treated surgically. Before surgery, the foot should be elevated above the level of the heart to help eliminate edema and prevent swelling from forming, which can affect the surgery time. Cold compresses must be applied appropriately, as they allow the small blood vessels to close after the injury and prevent further bleeding leading to swelling. A brace or cast should be applied for proper external fixation to avoid further damage to the injured ligaments. After the swelling is significantly reduced, surgical treatment can be performed. After successful anesthesia, the skin is incised, the ligament injury is located, and then the ligament is anastomosed, and after the anastomosis is completed, the surrounding subcutaneous tissue and skin are sutured and fixed in a cast to avoid further collision or injury to the ligament at the location of the suture. The duration of immobilization is about 3-4 weeks. After removing the cast or brace, the ankle joint can be flexed and extended as well as walking in bed without leaving any obvious sequelae.