Will Cracking Your Knuckles Give You Arthritis?

YouBeauty.com

We Asked: John Indalecio, a hand therapist at the Hospital for Special Surgery in New York

The Answer: There is no compelling scientific evidence that cracking your knuckles causes arthritis. But a long-standing habit could affect joint function down the road. Here's what's going on.

MORE: How to Know if You Have Carpal Tunnel

A joint is the point at which two (or more) bones meet. Ligaments connect the bones to one another, and a joint capsule surrounds the whole thing. It is filled with a natural lubricant called synovial fluid that helps the joint move smoothly. When you make the motion to crack your knuckles, the joint is pulled apart, expanding the capsule. This decreases the pressure inside the capsule, forcing gasses dissolved in the synovial fluid to release into the space to equalize it. That rush of gas causes the pop! sound-so satisfying to you, so annoying to everyone else in the room. It's like popping the top on a can of soda.

MORE: Does Nail Polish Turn Your Nails Yellow?

It takes about 30 minutes for the carbon dioxide, nitrogen and oxygen to dissolve back into the synovial fluid. That's why you have to wait a while before you can get a second pop.

Cracking your knuckles feels good because it stretches the joint and stimulates the nerve endings found there. Can it be dangerous? Well, while it's unlikely that knuckle cracking can do the cartilage damage that leads to arthritis, it can lead to instability in the joint and loss of grip strength and hand function.

MORE: Why We Blush

- by YouBeauty Editors

More From YouBeauty
Medicinal Plants You Can Grow at Home
Does Hair Get Used to Shampoo?
Your Football Team Might Be Making You Fat