Fracture shows that the continuity of the bone is interrupted on the radiographs, the broken ends of the fracture are well aligned, the fracture line is obvious, and the fracture line will be blurred when the radiographs are taken 2 weeks later, and the bone marrow cavity will be reopened for a longer period of time, and the continuity of the bone will be normalized. In clinical practice, fracture usually does not need to take surgery or other therapeutic measures, and can be fixed with plaster or splint, and then take a review of the fracture line to see whether the fracture line becomes blurred after about 4-6 weeks of fixation. If the blurring of the fracture line reaches the standard of initial clinical healing, the cast and brace can be removed, and then carry out functional exercises for the joints in the injured position to promote the recovery of limb function. If the cast or splint is not immobilized, or if it is removed too early and activities are performed too soon, it may lead to displacement of the broken end of the bone at the location of the fracture, and the fracture may become more difficult to heal.