What Happens When I Crack My Knuckles?

Discover what is happening when you crack your knuckles. And for starters, your knuckles don't crack, they pop.

Biology - Human Body - Learning Points.

Your knuckles do not crack - they pop!

The noise is the bursting of a gassy bubble, formed when the space between your bones increases.

A lifetime of cracking knuckles can be dangerous, causing swelling to your joints.

Swelling to the joints in the hand can lead to a loss of gripping strength.

A Twig Context Film.
Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.