Ball and socket joint

A ball and socket joint (enarthrosis, spheroidal joint) is a joint in which the distal bone is capable of motion around an indefinite number of axes, which have one common center.

In a ball-and-socket (or spheroid) joint, the ball-shaped surface of one bone fits into the cuplike depression of another. Movements are flexion-extension, abduction-adduction, and rotation (triaxial) and circumduction;

The ball-and-socket joint is a movable joint, that consists of one bone that is rounded and that fits within a cuplike bone. Examples of this form of articulation are found in the hip and shoulder.



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