Joints are the connections between two or more bones that can move, and it is because of them that we can move around. There are often scenes in movies where the neck is twisted before a fight, making a breaking sound. In our daily life, we can always hear the joints ringing, many people have such a situation, sitting facing the computer all day, tired of work, stretching, shoulder joints may also appear ringing, sometimes a sudden change in activity, the knee joint will also appear “rattling” ring, but what is this in the end? Why do joints make sounds? Will it affect my health? Why does the joint make a sound? 1, gas overflow There is joint fluid in the joint to play a lubricating role, the liquid contains oxygen, nitrogen and carbon dioxide. When the joint is squeezed, the joint capsule expands and contracts, the gas is quickly released, forming bubbles, and there is a ringing sound. This mechanism is to prevent the joint from being squeezed again, because it is necessary to wait for the gas to return to the joint fluid before it can be squeezed again. 2.Joint, tendon and ligament activity When moving, if the posture and position are not correct, there will be a ringing sound. 3, rough surface After arthritis occurs, a rough surface appears because of the loss of smooth cartilage, and a rattling sound occurs when rubbing. If the joint rings like this, nothing happens The joint cavity is filled with synovial fluid and there are no gaps, which keeps the parts of the joint close together and keeps the joint stable. However, when the joint suddenly moves, the negative pressure is disrupted and a small amount of gas enters the joint cavity. These gases will spread to all parts of the joint cavity, and will also vibrate together with the synovial fluid, emitting a loud sound, which is called physiological popping and is not harmful to the body. Many people also have a “click” sound when the neck turns, most of them are physiological popping, but if there is pain, numbness, weakness and other symptoms, then we should be alert, this may be a precursor to cervical spondylosis. What kind of ringing is physiological ringing? 1.The sound is crisp and discontinuous, and the joint ringing is particularly crisp and discontinuous, and there must be a period of time between two ringing. 2.It often occurs when the joint suddenly moves. Physiological ringing is the sound made when the joint is suddenly pulled and bent. 3. After the ringing, the joint does not hurt. When the ringing occurs, the joint feels a little uncomfortable, but after the ringing, the joint feels much more relaxed and no pain occurs. Will the knee always ring and break the joint? A slight popping sound will not cause wear and tear on the knee in the short term, but it indicates that you do not have enough synovial fluid in the joint cavity. In the future, it is best to do some preparatory activities before exercising, and then do formal exercise after a full warm-up. For people with internal or external patellar displacement, it is best to master the correct exercise method and try to avoid squatting, climbing stairs and other exercises. The common physiological ringing will not “wear out” the knee joint. Generally speaking, physiological rattling is just a rattling sound, the joint is not red or swollen, and you will not feel pain. But if the joints are not only ringing, but also accompanied by redness, swelling and pain, you have to be careful! For young people, if the joints often ring and hurt when exercising, it may be caused by ligament damage due to lack of attention when exercising; for people over 60 years old, if the knee joints ring and hurt when moving a little, arthritis is the most likely; if the knee joints ring and are accompanied by strangulation (stuck), it may be meniscal damage, synovial fracture syndrome, synovial chondromatosis, etc. If the joint sounds and movement is limited, this may be a joint adhesion. If the swelling of the joint does not subside for a long time after a fall, dislocation or fracture, and the limb does not move for a long time, joint adhesions are likely to occur, and the main clinical manifestations are impaired joint flexion and extension activities.