Knuckle cracking: Although knuckle-cracking has never been shown to cause arthritis, it is possible to strain ligaments when you pull on the fingers so hard. The cracking sound is from an air bubble that pops. It is a sign that you pulled too hard. Excessive hand exercises may just aggravate the soreness. Leaving your hands alone except for normal activities will eventually reduce pain.
Answered 8/4/2014
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