ball-and-socket joint

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A synovial joint (e.g. the hip joint and the glenohumeral joint in the shoulder) in which the ball-shaped head of one bone articulates with the concave, cup-shaped socket of another. Such joints are sometimes called universal joints because they allow movement along three axes (i.e. they allow abduction, adduction, circumduction, extension. flexion, and rotation).

Subjects: Sports and Exercise Medicine.

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