It is less likely that a fracture will still be displaced in 40 days, because within 40 days after the fracture occurs, there is basically already a primary bone scab growing. This primitive scab is not as resistant to fracture as normal bone, but it at least holds the fracture together, like fibrous connective tissue, or granulation tissue, and some cartilage-like tissue, which holds the fracture together. At this point, as long as the fracture is not subjected to another violent blow, or if the fixation is removed prematurely, such as fixation splints, casts, braces, plates, screws, etc., and the fixation is maintained, the chances of re-displacement of the fracture are small. Therefore, the patient can carry out activities and functional exercises on the ground at this time, and generally will not be re-displaced.