What Makes Your Knuckles Pop?
"If you've ever laced your fingers together, turned your palms away from you and bent your fingers back, you know what knuckle popping sounds like."
Knuckle Cracking Q&A
"Why do people crack knuckles? Cracked knuckles feel looser and enjoy more mobility for awhile after cracking."
Ask a Scientist: Does Cracking Your Knuckles Cause Arthritis?
"There is no compelling scientific evidence that cracking your knuckles causes arthritis."
Ever Wondered if Cracking Your Knuckles is Bad for You?
"If you're a kid, chances are you either crack your knuckles or know someone who cracks theirs."
Does Cracking Knuckles or Joints Cause Arthritis?
"Cracking of joints, also referred to as 'popping', is a form of joint manipulation that produces a popping or cracking sound, as may occur during knuckle-cracking, a deliberate action."