After the fracture, the fixation method varies according to the fracture line, which is divided into internal fixation and external fixation. After fracture, if the displacement is serious, there is no way to achieve the therapeutic purpose through conservative treatment, mostly use internal fixation, which includes a series of fixation materials such as plate, steel nail, intramedullary nail. There are many types of external fixation after fracture: the first and the most commonly used one is plaster external fixation, which is mainly used for fracture alignment and good alignment, and has reached functional reset of the fracture site; the second one is more commonly used is small splint fixation, which is mainly used for fixation of long bone fracture; the third method is continuous bone traction or continuous skin traction; the fourth method to do external fixation of fracture, which is mainly used for The fourth method is external fixation of the fracture, mainly applied to the shoulder joint, and is called abductor fixation.