What is the reason for the sound of my knees when exercising?

Ringing after knee activity** can be divided into physiological and pathological. The main diseases that cause ringing after knee movement are:1

Physiological snapping: there is no organic lesion of the knee joint, which is a normal physiological phenomenon. 2.

Joint synovial fluid: due to a small number of bubbles in the interstitial fluid in the joint capsule, the pressure in the joint capsule is constantly changing when the joint is moving, when the intracapsule pressure decreases, the gas will be released from the interstitial fluid to produce a sound, and when the intracapsule pressure increases, the gas redissolves in the interstitial fluid, so the sound recurs. 3.

Meniscus injury: One of the main effects of the meniscus is to relieve friction between the tibia and femur bony surfaces. When the meniscus is injured or removed, the tibia and femur bone surfaces touch each other, causing a sound and often pain.

4.Discoid meniscus: This is a type of dysplastic meniscus that is large and thick in shape, and when the knee is flexed and extended, the large, thick meniscus can cause a snapping sound in the joint.

5.Synovial fold syndrome: The connective tissue that is not completely degenerated and absorbed in the knee joint during the fetal period is called synovial fold, and when the knee joint is moving, the synovial fold in the joint capsule can be squeezed and popped.

Pay attention to whether it is bone hyperplasia, arthritis, or it may be a tissue in the semicircle of the knee that is damaged, remember to go to the hospital to see, and follow the doctor's instructions.

If there is such an abnormality during exercise, then it is likely to be caused by a lack of calcium, and we usually need to supplement more calcium.

Normal, but still to be checked, knee rings may be caused by the following reasons: The first case is a physiological snap. This condition is often seen when the knee joint is at rest for a long time, and when it suddenly moves, it will cause a snap due to the change in pressure inside the joint.

The second condition is that there is a related lesion inside the knee joint. For example, there are cartilage injuries of the knee joint, meniscus injuries, ligament injuries, loose bodies, etc. In all cases, there is an abnormal sound when the knee joint is moved, and it is accompanied by pain and limited movement.

Extended information: It is medically believed that there are two kinds of knee sounds: one is physiological snapping, and the other is pathological snapping, physiological snapping is harmless to the body, but if it is pathological snapping, there may be many reasons.

Physiological knee "ringing" has 4 signs.

When I knew that physiological strumming was harmless to my body, I even had a bold idea, this kind of knee is a bit like the sound of playing drums, and we will form a band together, some people use guitar, some people use bass, and they directly use their knees to accompaniment. But when I bent my knees again, I found that there was no more sound immediately, and the band thought of giving up. Actually, this is related to the characteristics of physiological snapping:

1.The sound is crisp and single.

1. No repetition.

When the knee makes a sound, do not ignore the noise, but listen to and analyze the characteristics of the sound. Pay attention to whether the sound is crisp and whether it is a single sound. If there is no pain, try moving the joint again, noting that the sound continues.

2.Occurs only when the joint is suddenly stretched or flexed and extended.

Physiological snapping is somewhat episodic and mostly occurs during sudden joint movement. Just like a sudden squat, there is a possibility that the knee will pop physiologically, or it may occur when you stand up after squatting.

3.There must be a certain period of rest between snaps in the joint.

The reason why physiological popping occurs is because there is some lubricating fluid in our joints, where the bones come into contact with each other. These lubricants protect our bones by reducing friction between them. There will be some small bubbles in the lubricating fluid, and when we move the joint, the bubbles will pop and make a popping sound.

Bubbles don't form again quickly after bursting, so there will be an intermittent period between bounces.

4.It is accompanied by mild pain or discomfort, and there is often a sense of relief after the bang.

In fact, this kind of snapping is still relatively common, and it is the same reason that when we usually move our joints, we break our fingers and turn our wrists. If this physiological snap occurs, it will not cause other discomfort and does not require special treatment, and this popping is most common in adolescents who are in the mature stage of joint development. It does not happen to infants and young children, and it rarely happens to children.

Young and middle-aged people are more likely to have a sound, and this phenomenon will gradually disappear as they grow older and enter old age. Moderate physiological snapping will facilitate joint movement and be beneficial and harmless, but it is worth noting that long-term deliberate physiological snapping may cause arthritis.