Whether knuckle cracking is, in your opinion, the equivalent to a soothing massage or the sound of nails on a chalkboard, you likely have a strong opinion one way or the other.
So what’s causing that popping sound?
The Huffington Post tells us scientists may have finally “cracked it.” Get it? You may have previously been told the sound is from a little gas bubble inside the knuckle popping. But, that could not be further from the recently-discovered truth.
In fact, the sound is likely from a cavity forming in the fluid that lubricates the joint. You can think of it as more of a vacuum than a bubble.
Next question – is it bad to have a little cavity in your joint fluid?
Probably not. The Huffington Post covered this nearly two years ago. Bottom line: Knuckle-crackers, rejoice!
