ball-joint

Medical Dictionary

ball-and-socket joint n.
A multiaxial joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint. Also called cotyloid joint, enarthrodial joint, enarthrosis, spheroid joint.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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