cracking sound

Many people consider the sound of creaking joints was associated with less favorable and believe the sound was caused by the bones that rub against each other. Actually cracking sound is not caused by the friction of bones, but by the gas between the joints.

 



Our joints contain something called synovial, which helps lubricate joints. Synovial fluid contains the gases oxygen, nitrogen, and carbon dioxide. Research shows that when cracking a joint, you keep her bones, and the capsule surrounding the joint that was stretched. This causes the synovial fluid spraying from one side to the other books. Liquids that this move creates an empty space, which quickly filled with gas again. This rapid movement of gas that gave rise to the sound of pop. To return crack knuckle same time, you have to wait until the gas back into the synovial fluid. That is why, we can not menderakkan same knuckle twice turur quick succession.