A member asked:

Why do knuckles make that "cracking" noise? what makes the "cracking" sound when you crack your knuckles?

A doctor has provided 1 answer
Dr. Gregory Hines answered

Specializes in Family Medicine

Fluid: Shunting fluid from one part of the joint space to another makes the clicking noise of cracking your knuckles. It is normal.

Answered 2/28/2013

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