One 1990 study of 300 people did find that cracking knuckles over a long period of time led to hand swelling and decreased grip strength, ... ... <看更多>

Real deal or wives' tale: Knuckle cracking can cause harm, including arthritis? A Mayo Clinic hand surgeon's answer may surprise you. ... <看更多>

REALTIME MRI of cracking a knuckle ! - video courtesy of NewScientist There is an assumption that hearing the 'crack' or 'popping' sound means... ... <看更多>