What makes joints crack?

Question

What is it that actually makes the creaking/cracking noise? 

When I get up from kneeling my knees kind of creak... is it the cartilage making the noise, or the bone, or what? Do different times of noises indicate different problems?

Anonymous · Accepted Answer

Escaping gases, movement and rough surfaces.
http://www.loc.gov/rr/scitech/mysteries/joint.html

Snap, crackle, pop...it's not just for breakfast anymore.

? · Answer

i became into constantly informed that the noise is air bubbles escaping from the joints. i'm specific it fairly is that regularly, yet often it appears like a joint popping back into place. So i'm no longer in all probability specific, yet it fairly is my 2 cents :P

☮MuSe☮ · Answer

I was always told that the noise is air bubbles escaping from the joints. I'm sure it's that sometimes, but often it feels like a joint popping back into place. So I'm not really sure, but that's my two cents :P

Anonymous · Answer

what i was told at a uni trip, was that it was the cartlidge rubbing with eachother, if it happens alot, it could be athritis. so get it cheked out

What makes joints crack?

4 Answers