Generally speaking, the “clicking” sound like this is from the joints. Joints are the joints between bones, and it is because of them that we can move around. This shows that the joints are very important to us. Joint maintenance and protection is very important A. There is something called synovial fluid in our joints Synovial fluid is secreted by the synovial membrane of the joint bursa and tendon sheaths, and contains a clear mucous lubricating fluid similar to mucin substances, which has a lubricating effect and is a secretion of human organ tissues that plays the role of lubrication, moistening organs and expelling toxins. The main component of synovial fluid is water and a large amount of nutrients, which not only moisten the joints, stomach, brain, marrow and other tissues and organs, but also discharge the body’s metabolic products continuously through sweat and urine, so that the activities of the organs and tissues of the body are normal. When our synovial fluid decreases or becomes viscous, the products of metabolism are retained in the body, which can lead to various disorders. If the synovial fluid decreases with age, the lack of lubricant in the joints can lead to degenerative arthritis, bone spurs and osteoporosis due to wear and tear, and the long-term lack of synovial fluid in the cartilage can lead to osteoarthrosis. If there is gas in the synovial fluid, when we squeeze the joint, the joint capsule expansion, the gas will be quickly released, the formation of bubbles, we hear the “click” sound. Second, when we are moving around, if we suddenly hear our joints making a “clicking” sound. This time to pay attention to, in fact, is to remind you that this activity is not the right action. This sound is our joint surfaces, tendons and ligaments are moving. Third, our joints can also become inflamed, so after the inflammation of the joints, the loss of smooth cartilage appears as a rough surface. At this time, friction will also appear this “click” sound. The above mentioned 3 reasons for the popping sound, this is the first two are normal joint popping. The third, as we age, is not considered a pathological shutdown all the time. So do we not have to care about the popping sound of the joints. Not really! If a joint pops and becomes painful and enlarged, it is important to seek medical attention as soon as possible. This is especially true for our knee joints.