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单词 ball and socket joint
释义

Ball and socket joint


a joint in which a ball moves within a socket, so as to admit of motion in every direction within certain limits.

See also: Ball

EncyclopediaSeeball-and-socket joint

ball and socket joint


ball and sock·et joint

a multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Synonym(s): articulatio spheroidea [TA], enarthrosis ☆ , spheroidal joint ☆ , articulatio cotylica, cotyloid joint, enarthrodial joint, socket joint, spheroid articulation

ball-and-socket joint

The most freely movable type of synovial joint, in which the ball-like end of one bone (e.g., the humerus, femur) is surrounded by a spherical cartilaginous encasement, or “socket” (e.g., hip joint), or a group of structures that act as a functionally spherical encasement (e.g., shoulder joint), which allows free mobility of the articulating bone.
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更新时间:2024/9/22 7:02:52