Osteoarthritis (OA) is a common type of arthritis ... OA commonly develops in the joints of the hands, knees, hip, neck, and lower back—but can affect any joints and bones in your body.

Knuckle cracking, a common habit, involves the formation of an air bubble in the synovial fluid of finger joints. While the ...

The disorder can affect the hands, hips, or spine ... Narrator If you're already showing signs of osteoarthritis, make those exercises of the low-impact variety. For WebMD, I'm Damon Meharg.