What is the cause of crepitus?

The most common cause of crepitus is rough cartilage and bone rubbing together in a joint, and the most common cause of this type of crepitus is arthritis or joint injury. Another common cause of crepitus is when air gets inside soft tissues, which can cause a crackling or popping sound when pressed.

Should I worry about crepitus?

Crepitus usually is not a cause for concern. In fact, most people's joints crack or pop occasionally, and that is considered normal. But if crepitus is regular and is accompanied by pain, swelling, or other concerning symptoms, it may be an indication of arthritis or another medical condition.