Ball joints act like hinges and connect the suspension control arms to the steering knuckles with a rotating, spherical stud and a socket, giving the wheels a wide range of movement -- from side ...

If your joint is too loose the ball of the shoulder can: 1. Slide around in the socket. 2. Slide partially out of the socket (called subluxation or partial dislocation). 3. Slide completely out of ...

The shoulder and hip joints are both ball and socket joints. A ball and socket joint is a type of synovial joint that allows movement in almost every direction. A ball and socket joint is made up ...

Physiotherapist and director of Complete Pilates Helen O'Leary says: "Anatomically the shoulder is a shallow ball-and-socket joint, which makes it inherently unstable. This causes it to be at ...

This occurs when the angle of a joint increases, for example the elbow when throwing a shot put. The take-off knee extends when a high-jumper takes off (the other knee is flexed). Ball and socket ...