Monday, October 12, 2009

What causes the noise we hear when we crack our knuckles or pop other joints?

I've read that the sound comes from the release of gas bubbles. If so, what sort of gas bubbles are they, and how can releasing them possibly make so much noise?
Answers:
Escaping gases: Scientists explain that synovial fluid present in your joints acts as a lubricant. The fluid contains the gases oxygen, nitrogen, and carbon dioxide. When you pop or crack a joint, you stretch the joint capsule. Gas is rapidly released, which forms bubbles. In order to crack the same knuckle again, you have to wait until the gases return to the synovial fluid.
I dont think its releasing gas bubbles. I think its just the bones rubbing together. Chris,
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the noise is caused by nitrogen bubbles in the synovial fluid.
i think a little man lives inside our bones and farts everytime we do that.. i think that is the noise
keep your lips pressed together and part it. you hear some voice. joints lie together and when we part it by bending, noise is produced.
Just went to the chiropractor, irnoically enough we descussed this. Its gas like the first person said!! He also told me it wont cause arthritis to crack them if you do it right its actually good for you
its something related to the synovial fluid present in the joints!

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