This is usually due to the fact that the bone is not able to withstand that much stress after the internal fixation is removed and the fracture occurs again. After the fracture is fixed by internal fixation, the bone grows up because the plate bears part of the force, which causes the bone to become osteoporotic. Before the internal fixation is removed, functional exercise is needed to consciously promote the blood circulation of the injured part. Pay attention to the principle of gradual and orderly progress, do not be too hasty.