Mystery Behind Why Pulling On Knuckles Makes Them Crack Solved

2015-04-15 36

Knuckle popping and cracking is a fairly polarizing habit, but it turns out that the science behind what produces the sound has also put people at odds.

Knuckle popping and cracking is a fairly polarizing habit, but it turns out that the science behind what produces the sound has also put people at odds. 

Researchers have been developing, testing, and debating theories since at least the late 1930s, but a team from Canada has finally settled the matter once and for all. 

They did so using a skilled subject, a custom built finger-pulling device, and an MRI. 

The fingers of the test participant, who was described as the Wayne Gretzky of knuckle cracking, were 

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