People battling debilitating arthritis in the shoulder are finding relief thanks to a revolutionary 'backward' ball and socket joint replacement. Traditional shoulder replacements use a ball-shaped ...

Your hip joints are ball-and-socket joints positioned where your thigh bone meets your pelvis. The hip joint is involved in many types of movement. It is also one of the largest joints in the body, ...

Hip dysplasia is a condition in which your hip socket doesn't completely cover the ball of one of your thigh bones. Your hip is the biggest ball-and-socket joint in your body. The ball of your thigh ...

Ball and socket joints are useful, but making a part slide over the surface of a sphere, held by magnets, requires a lot of fiddling to get right. We admire persistence and nailing all the details.

This article was supported by readers like you. Our mission is to provide accurate, engaging news of science to the public. That mission has never been more important than it is today. As a nonprofit ...