Can Knuckle Cracking Really Cause Arthritis? We Asked the Experts

SOLVED:Cracking Your Knuckles When you "crack" a knuckle, you cause the knuckle cavity to widen rapidly. This, in turn, allows the synovial fluid to expand into a larger volume. If this expansion is sufficiently rapid, it causes a gas bubble to form in the fluid in a process known as cavitation. This is the mechanism responsible for the cracking sound. (Cavitation can also cause pits in rapidly rotating ship's propellers.) If a "crack" produces a sound with an intensity level of 57 dB at your ea

The sound of 500 people cracking their knuckles at the same time

Why do your knuckles pop? - Eleanor Nelsen