Arthritis: Cracking the Knuckles
Gregory Kaplan, Physical Therapist with West Kendall Baptist Hospital, explains cracking their knuckles won't give you arthritis, but it can be a sign of instability in the joint. It releases pressure on that joint, it is a temporary relief. "It is not addressing the main avenues you really need to address as far as strengthening the muscles, working on a range of motion that would provide benefit."
He also says some common areas with arthritis are knees, hips, shoulders, hands, and along the spine.
