Health Care > Cracking fingers?Related Photo
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I crack my fingers a lot. But i always wondered what it is I'm actually doing? what makes the noise? Why can i only do it once and then i have to wait a while? why can i crack my foot over and over??
synovial fluid present in your joints acts as a lubricant. The fluid contains the gases oxygen, nitrogen, and carbon dioxide. When you pop or crack a joint, you stretch the joint capsule. Gas is rapidly released, which forms bubbles. In order to crack the same knuckle again, you have to wait until the gases return to the synovial fluid.
