This type of sports injury is very common and is the first in the incidence of joint ligament injuries. It is most common in sports such as basketball, soccer, skiing and track and field. The important ligaments of the ankle include: medial collateral ankle ligament, lateral ankle ligament, heel talar interosseous ligament, divergent ligament, heel ligament, jump ligament, short metatarsal ligament, long metatarsal ligament, and inferior tibiofibular ligament. Clinically, they are generally classified into three categories depending on the mechanism of injury: posterior rotation injuries, anterior rotation injuries, and external rotation injuries. Posterior rotation injuries are caused by internal rotation of the ankle and inversion of the foot. Pre-rotation injuries are the result of ankle external rotation and foot abduction and valgus stress. External rotation injuries are caused by internal rotation of the fixed calf of the foot. In clinical practice, there is a history of sudden posterior, anterior, and external rotation injuries to the ankle (simply put, a broken foot) with symptoms of pain, swelling, subcutaneous bruising, and claudication. The ankle ligament injury (70% of anterior talofibular ligament injury) can be divided into three degrees: degree I injury, no joint instability, can be fixed by elastic bandage, adhesive plaster or ankle brace; degree II ligament injury joint combined with mild instability, can be fixed by plaster or surgical repair; degree III ligament injury joint serious instability, generally need to repair or reconstruct the ligament.