X-Ray Shows What Really Happens When You Crack Your Knuckles

Brace yourself.

There are two types of people in this world: those who crack their knuckles and those who shudder at the very thought.

While it might be a difficult habit to break - or crack, if you'll excuse the pun - a recent video showing what really happens when you crack your joints might be enough to put you off for life.


The video was taken under a fluoroscope, also known as an X-ray image intensifier, and uploaded to Imgur. The fascinating video has been viewed more than one million times (and counting).

The user, who is a student at a veterinary school, says a lecturer was teaching them how to use the device in a small hospital.

Reactions have been mixed.

A radiology student described the video as "satisfying", while another said: "As someone who cracks my knuckles and joints a lot, I don't think I will anymore."

Another commented: "I thought I was about to witness a finger breaking. That was intense!"

But despite the dramatic footage the researchers found no evidence that knuckle cracking causes immediate damage to the joints.

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