KNUCKLE CRACKING CAUSES ARTHRITIS
This saying was probably created to stop someone’s annoying habit, but there’s no evidence that cracking your knuckles results in arthritis. So say experts at Harvard Medical School in the US, who reviewed studies comparing rates of arthritis among those who do and don’t do it. The sound occurs when gas bubbles form in the fluids between your joints and are released by a sudden movement. It’s not thought to be harmful and doesn’t mean you have a functional issue with your knuckles – or any other joint that makes the sound.