Bone rattling may be caused by physiological rattling, joint structure disorders, joint injuries and so on. 1. Physiological rattling: there is a certain amount of joint fluid in the joints themselves that can play a lubricating role, but the joint fluid may contain some gas inside the joints when the joints are moving, the gas will be extruded, thus making a rattling sound. 2. Joint structure disorders: for example, long-term calcium deficiency or frozen shoulder, etc., may lead to joint structure disorders, thus affecting the normal activities of the joints, when walking or doing other joint activities, it is easy to rattle. 3. Joint injuries: Trauma, for example, causes damage to the normal structure of the joints, which can affect the joint activities, thus leading to bone rattling. Bone rattling may also be caused by other reasons, such as lesions around the joints, if accompanied by symptoms of discomfort, you should promptly go to the hospital to find out the cause of targeted treatment.