Why do joints crack? The medical explanation, on Realitatea Medicală

Many people have wondered why those popping sounds occur when we move our joints, for example our fingers or knees. On the programme "Realitatea Medicală", Nicole Păcuraru explained the mechanism behind this sound and clarified when it is simply a normal physical phenomenon and when we should pay attention and seek medical advice.

According to the explanation, the sound occurs due to gas bubbles present in the synovial fluid, the substance that lubricates the joints. When a joint is moved, the pressure inside changes, and these bubbles "burst", generating the characteristic noise.

Under normal circumstances, this phenomenon does not indicate illness or joint deterioration, as long as it is not accompanied by pain. It is described as a simple physical process, rather than damage to the joint structure.

The programme's conclusion is that not all sounds produced by the body should be viewed as warning signals.