Popping joints are common. Some researchers used to think the popping sound was an air bubble between collapsing bones, while others believed the sound came from the recoil of muscle ligaments.
Some 2006 Lincoln Zephyrs, 2006-09 Ford Fusions and Mercury Milans and 2007-09 Lincoln MKZs may emit a popping, rubbing or crunching sound from the front suspension when going over bumps or while ...
Knee clicking is common and often harmless, caused by gas bubbles or tendons moving over bone. However, when accompanied by pain, swelling, or instability, it can signal a meniscus tear or arthritis.