A study of the cracking sounds from the metacarpophalangeal joint. Habitual joint cracking and radiological damage. PubMed PMID: 28137441Ī couple of studies have reported an association between knuckle cracking and hand arthritis.Ĥ Watson P, Hamilton A, Mollan R. Effects of habitual knuckle cracking on metacarpal cartilage thickness and grip strength. Research studies comparing knuckle crackers' to non-crackers have had mixed results.ġ Yildizgören MT, Ekiz T, Nizamogullari S, Turhanoglu AD, Guler H, Ustun N, Kara M, Özçakar L. But what do medical researchers say?Ĭonflicting research on knuckle cracking and arthritis It seems logical that habitual knuckle cracking causes arthritis or other degenerative changes in the hand. This is why you can’t crack the same knuckle twice in a row. ̳Cracking joints‘ A bioengineering study of cavitation in the metacarpophalangeal joint. It usually takes 15 or 20 minutes for the gas bubbles to dissipate and for the bones of the joint to return to their normal positions.ģ Unsworth A, Dowson D, Wright V.Let's get a hand on this: Review of the clinical anatomy of "knuckle cracking". ![]() It is not clear whether the cracking noise is produced when bubbles form or when the bubbles pop.Ģ Rizvi A, Loukas M, Oskouian RJ, Tubbs RS.The pressure change causes tiny gas bubbles to form in the knuckle’s joint fluid. ![]() Any of these movements can cause a change in pressure in the joint. To produce a cracking sensation, a finger is forced forward or backward (doctors call this hyper-flexion or hyper-extension at a metacarpophalangeal joint) or pulled straight away from the hand. ![]()
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