After the foot is broken, the clinical symptoms of ligament tear are as follows: 1. After the foot is broken, there will be severe localized pain, swelling, subcutaneous ecchymosis, and the pain symptoms will continue to aggravate when moving the ankle. Examination can be found at the site of injury has limited pressure points, ankle plantarflexion position pressure, so that the foot inversion or eversion, pain symptoms increased, at this time that can be diagnosed as ankle ligament tear. 2, the ligament tear is difficult to diagnose patients, but also in the pressurized state of extreme inversion or eversion position, the ankle orthopantomography, can be found in the outer joint space significantly widened, or the inner joint space, which indicates that the ligament is significantly widened, then the ligament is torn. A significant widening of the lateral joint space, or a significant widening of the medial joint space, indicates a serious tear of the ligament, which should be treated surgically as soon as possible after diagnosis of the tear.