Most of these symptoms are caused by chronic inflammation of the thoracic rib joint, which is a joint with very little mobility. When the local area is often stimulated by external force or has been traumatized, it may lead to slight damage to the thoracic rib joint as well as the cartilage structure around the joint, resulting in slight inflammation. When the injury and inflammation have not healed, once the thoracic rib joint is pressurized, pain symptoms will appear, especially when sleeping on the side, the weight of one side of the chest and the weight of one side of the upper limb, all of which will cause extrusion on the thoracic rib joint, making the thoracic rib joint undergo a mild deformation, which will lead to the symptoms of pain. This kind of pain symptom is usually treated with appropriate medication that activates blood circulation and removes blood stasis, as well as other symptomatic treatments, which can bring about significant relief of the pain. If the symptom is not relieved, it is necessary to consider other lesions on the skeleton, and it is necessary to carry out the relevant examinations in a timely manner.