View Full Version : "Cracking Joints"

David Clarke
04-03-1997, 09:23 AM
Dear biomch-l readers:

The following is for my own interest. I frequently "crack" my knuckles,
knees, ankles, elbows, etc. The "school-yard" explanation that I've
heard is that I'm releasing nitrogen gas from the blood. Any truth to
that? Does anyone know the mechanism behind this?

Incidently, I find that if I don't "crack" my knees frequently (4 or more
times per hour), then I find flexion/extension to be a very odd
sensation. Not painful, just a little stiff.

Can I develop arthritus year from now because I continue to do this to my
body? I've heard both yes and no.

Any insight would be appreciated.

David Clarke
Engineering Student
Memorial University of Newfoundland
St. John's, NF