Rib injury has been thumping noise, considering the normal cartilage activity around the ribs caused by; but does not rule out the fracture caused by. 1. Periprosthetic cartilage activity: the noise generated by the periprosthetic cartilage activity may be the bouncing noise of the thoracic rib joint movement, which is a normal phenomenon. If it does not cause obvious pain, it usually does not need special treatment. 2. Fracture: rib fracture can be heard bone thumping sound, which is the sound of bone friction. If this is a single rib fracture, there is a slight friction sound is normal, will bring localized pain, percussion pain or deep breathing pain, as long as the symptomatic treatment can be. If it is a specific type of fracture, the fracture will also have bone rubbing and surgery should be performed if necessary. There may be other reasons for the constant thumping of injured ribs. If physiological reasons are ruled out, a doctor should be consulted to clarify the exact cause and, if necessary, treat accordingly.