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.

Joints emit a variety of noises, including popping, snapping, catching, clicking, grinding, grating, and clunking. The technical term for these noises is “crepitus”, from the Latin “to rattle”. People ...

Knees, elbows and other joints can sometimes make popping noises. Is it something to worry about? Orthopedic surgeon Dr. Patrick Greis, says, generally, no. However, a popping noise associated with ...