Knee popping is often harmless and may occur when a person exercises. However, when it occurs alongside pain, it may be a sign of an underlying problem, such as arthritis or a knee injury. With a knee ...

Many people’s knees squeak, crack, or crackle, a phenomenon known as crepitus. Most of the time, it’s no big deal at all. But a loud popping sound accompanied by pain and swelling indicates an injury.

Knee popping — also known as “Barbie knees” due to the sounds the doll makes when someone bends its knees — can be an unsettling experience, often leaving individuals concerned about potential ...

Roshini Raj, MD, is Health's former magazine's medical editor and coauthor of What the Yuck?!. Board-certified in gastroenterology and internal medicine, Dr. Raj is a Clinical Associate Professor of ...