The popping sound habitual knuckle crackers make may be annoying — or even alarming — but are they actually harming themselves? The research is somewhat limited but generally concludes that ...

Medically reviewed by David Ozeri, MD Key Takeaways Cracking bones is actually just the sound of joints popping and is usually not a reason to worry. Painful joint cracking may be a sign of injury or ...

If you've ever heard your knees pop when you stand up or noticed a cracking sound in your back as you stretch, you’re not alone. These sounds, medically known as crepitus, are common and usually ...