Bone fracture is a verbal term used by the people, literally meaning a crack in the bone that is not completely broken. There is no clinical diagnosis of “bone fracture”. So what is a “bone fracture”? By definition, a “bone fracture” is a fracture fracture in the sense that it is a fracture of the fracture form. Since this fracture is not clearly displaced and most of them are not clearly visible on X-rays, the probability of missing the diagnosis is high. The pain in the affected area is usually not relieved after 2-3 weeks, and when the X-ray is reviewed and compared to the film at the time of injury, signs of healing bone scab formation can be seen. Most avulsion fractures are treated conservatively and the prognosis is very good. If the joint surface is involved, the impact on joint function needs to be measured to determine the treatment plan. So what is an avulsion fracture? An avulsion fracture is actually a small bone block that is torn out of the attachment point of tendons and ligaments on the bone under the action of external force and violent muscle contraction. Clinically speaking, it is also a type of fracture, except that avulsion fractures of the inner or outer ankle are more common after ankle sprains due to the relatively small fracture block. Because the fracture block is very small, avulsion fractures are usually treated conservatively and in the long term may lead to painful movement of the affected area, while the exact degree of pain varies from person to person.