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A member asked:
What makes that cracking sound we make when we crack our knuckles?
A doctor has provided 1 answer
You're breaking : Little gas bubbles in the joint, very much like bubble wrap. It takes a bit before the gas reforms into a bubble, at which time you'll be able to pop (crack) them again. It may be annoying (to some), but it's not dangerous and will not lead to arthritis.
Answered 9/8/2013
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