For decades, knuckle cracking has been blamed for arthritis and joint damage. Scientists now say the sound comes from gas ...

Doctors refer to the cracking or popping of joints, like the shoulders, as crepitus. Though crepitus happens often, the reason that joints pop is not always clear. Cracking, clicking, and popping ...

People may notice a slight popping or cracking sound when moving their neck. Often, the sound occurs due to the movement of air trapped within the fluid of the joints. It may also occur due to slight ...