Image of the Day: Cracking Cavity

An MRI video of cracking knuckles reveals that the popping sound comes from the formation of a small air bubble (the dark cavity on the upper right image) in the synovial fluid of the joint.

The Scientist Staff
Apr 17, 2015

PLOS ONE, KAWCHUK ET AL.

(See “Real-time visualization of joint cavitation,” PLOS ONE, 2015.)

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Image of the Day: Cracking Cavity

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