What if I told you that—assuming an undetected injury isn't the cause of your discomfort—the more you move, the less pain you'll feel ... fluid Healthy joints allow the bones inserted into ...

You may feel it when you reach certain directions or move your arm and shoulder. You may hear a "pop" or "click." Often, collarbone popping is a sign of a problem with the bones or joints that make up ...

Bones are fastened to other bones by long, fibrous straps called ligaments (LIG-uh-mentz). Cartilage (KAR-tul-ij), a flexible, rubbery substance in our joints, supports bones and protects them where ...

All of these bones make up a skeleton that is both very strong and very light. Your spine is one part of the skeleton that's easy to check out: Reach around to the center of your back and you'll feel ...