But it’s a red flag if you notice knee pain, swelling or stiffness. “If a crack and pop is painful, or if a crack and pop ...

“Cracking joints can be noisy and concerning ... “For instance, someone with knee osteoarthritis may find that their kneecap also has small side-to-side movements, opposed to back-and-forth ...

Knuckle cracking, a common habit, involves the formation of an air bubble in the synovial fluid of finger joints. While the exact cause of the cracking sound remains unclear, studies have not ...

While creaky knees—known as knee crepitus—may be part ... by air bubbles that build up in the joint and pop when there’s ...

Is that cracking and popping normal ... WebMD explains common things that can cause knee pain. They do their job so well that you might take them for granted. WebMD's slideshow can help you ...