The bones ring when the body moves, mainly due to two reasons: First, due to degeneration of the joints, or the formation of osteoarthritis, the joint surface becomes uneven due to degeneration and wear of the joint cartilage. In addition, the joint space may become significantly narrower, and there may be more osteophytes and calcifications around the joint. When moving around, the degenerated cartilage and proliferated structures may produce a greater frictional squeezing force, resulting in a joint rattle. It is also possible that some small joints are slightly displaced, and when moving, the joints will be reset and the cartilage will rub against the cartilage, which will also cause the bones to rattle. Second, due to the metamorphosis of some soft tissues around the bones, resulting in a decrease in elasticity, when carrying out physical activities, the metamorphosis of soft tissues, due to the decrease in elasticity and the surrounding bone structure to produce a bouncing, there will be a significant ringing sound.