When ppl crack their fingers, where does the noice of the crack come from?!


Question: Gas bubbles escaping the synovial fluid under negative pressure.

edit: Yep. Crazy ain't it?


Answers: Gas bubbles escaping the synovial fluid under negative pressure.

edit: Yep. Crazy ain't it?

i always heard that your joints have fluid in them. the cracking sound is a llittle bubble of fluid popping.

The noise you hear is actually the breaking of small bubbles of carbon dioxide.

http://wiki.answers.com/Q/Why_does_crack...

air bubbles in the knuckles
http://www.livescience.com/health/060710...

Urr..


Gas-bubbles-escaping-the-synovial-flui... pressure.

Oh.

I always thought it was the bone :S.

i think its the joints ;o) yea bones could be annoyingly loud sometimes

I want to know how many people cracked their knuckles after they read this question haha
I did!
It is very weird to know that its gas bubbles though, they say you learn something everyday.

Gas bubbles escaping the synovial fluid under negative pressure.
Although it sounds like youre breaking a bone, youre not.

When you crack your fingers you're pulling apart the bones at the joints, which changes the pressure in that space and causes the synovial fluid to form a bubble and pop when the pressure changes back to its normal state. That's what you hear.

lol, im not okay, i did!!
and yea, its like lil bubble popping i think...





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