Pop Knuckle Cracking Noise – Finally Explained

Customers often ask me why their joints make that clicking/crunching sound when manipulated.  Click on link below to see a video showing what happens from m.livescience.com.

Video Link – Pop Knuckle Cracking Sound

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“It’s a little bit like forming a vacuum,” study researcher Greg Kawchuk, a professor of rehabilitation medicine at the University of Alberta in Canada said in a statement – “As the joint surfaces suddenly separate, there is no more fluid available to fill the increasing joint volume, so a cavity is created, and that event is what’s associated with the sound.” (LiveScience)