UC Davis radiology professor Dr. Robert Boutin and a colleague studied the sounds and effects of knuckle cracking.
UC Davis radiology professor Dr. Robert Boutin and a colleague studied the sounds and effects of knuckle cracking. Special to The Bee
UC Davis radiology professor Dr. Robert Boutin and a colleague studied the sounds and effects of knuckle cracking. Special to The Bee

Cracking knuckles: Is it bad? What makes that sound?

January 04, 2016 04:30 AM

UPDATED January 05, 2016 01:23 PM

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