It is common in movies and TV dramas – both sides clasp fists, fingers and body joints click, we all know that this means there will be a good show to watch. In life, if you sit and work for a long time, standing up and turning your neck or twisting your waist will make a “clicking” sound, which is the sound of the body’s joints called “joint popping”. Because the joint contact surface lack of lubrication, when the passive activities such as rotation, sliding, friction, etc. will emit a sound, as if the gears of the machine lack of lubricant. Joint popping can generally be divided into two categories: physiological and pathological. 1, physiological ringing It is from the joint cavity of the crisp, single, painless burst-like sound. For example: when the body is stationary for a period of time after the sudden extension and flexion of the limbs, twisting or extension and flexion of the trunk, the limbs, crest joints often “pop” sound. 2, pathological joint popping It is due to joint injury, disease or structural variation, resulting in rough synovial membrane, joint capsule, ligament relaxation, tendon hyperplasia or tendon sheath narrowing, joint disc rupture, articular cartilage off, etc., in the movement of the above-mentioned tissue friction and produce popping. The sound can be crisp, dull or frosted, mostly accompanied by pain or discomfort, and can occur continuously. Second, the clinical significance of the physiological joint popping: the moment the physiological joint popping occurs, the joint capsule is effectively stretched, the synovial folds are stretched, and the pressure in the joint cavity is changed. Doctors can use special techniques to make the joints of the cervical, thoracic and lumbar vertebrae pop, so as to achieve the therapeutic effects of loosening the tendons, activating the channels, relieving spasm and reducing pressure. Warm tips: 1, pathological ringing accompanied by pain, swelling, joint movement restrictions, need to promptly seek medical attention. 2, the prevention method is to strengthen the cervical and lumbar muscles exercise, reduce the time of ambulatory work or low-bending activities.