球窝关节, 杵臼关节 - Articulatio spheroidea; Enarthrosis
Enarthrosis (ball-and-socket joints).—Enarthrosis is a joint in which the distal bone is capable of motion around an indefinite number of axes, which have one common center. It is formed by the reception of a globular head into a cup-like cavity, hence the name "ball-and-socket." Examples of this form of articulation are found in the hip and shoulder.
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