The avulsion fracture of the ankle is usually not very serious, usually it is caused by the pulling of the ligament stop after the sprain, and the fracture will not produce sequelae as long as it is treated properly. Usually, if the avulsion fracture is not obviously displaced, it can be fixed with external U-shaped cast or splint for about six weeks, and when the fracture reaches clinical healing, the external fixation can be removed to do functional exercises of the joint and start walking on the ground. In addition, if the fracture is significantly displaced, an incision must be made for internal fixation. There are many methods of internal fixation, such as internal fixation with a kerfing needle, threaded nail, and now there is a better material called absorbable nail, which can avoid secondary surgery to remove the internal fixation after fixation.