In the early stages of a rib fracture, a hematoma will form at the fracture end, and the soft tissues surrounding the fracture will be swollen and painful. In addition, during thoracic movement, the fracture end will appear to move slightly, which can lead to increased local pain. After the hematoma at the fracture end has gradually resolved, which usually takes about two weeks, the swelling and pain in the surrounding soft tissues may also begin to slowly improve or disappear. After the hematoma has healed, the fibrous tissue proliferates and eventually a primitive bone scab is formed. At this time, the fracture end is relatively stable and there is no pain due to fracture movement when the fracture end is pressed lightly or when the thorax is moved lightly. As the bone scab grows vigorously, there will be obvious scab growth in about three months and the fracture line will disappear gradually, at this time the fracture can basically reach bony healing and can do a little heavy activities.