The external fixation brace is usually used to fix the fracture end of a traumatic fracture. Its advantage is that it can avoid damaging the soft tissue of the fracture end, especially the periosteum, so that it can effectively prevent the lack of blood circulation at the fracture end, resulting in slow bone growth, or even osteonecrosis and osteonecrosis, so it is especially suitable for closed reduction external fixation of some fractures or for some open fractures, where the soft tissue around the fracture is severely damaged, and such cases are not suitable for internal If the fracture is not suitable for internal fixation, external fixation brace is the most suitable. The disadvantage is that the external fixation stent usually has to be drilled outside the skin at the upper and lower ends of the limb or fracture to fix the fracture end, so it is easy to change the medication and disinfect the wound on the skin in the usual care, and it is not very convenient for the usual working life because the external fixation stent usually affects the appearance, and it is easy to touch and cause local wound infection. It is easy to touch, resulting in local wound pain.