ball and socket joint (redirected from Ball and socket joints)
Also found in: Dictionary
Related to Ball and socket joints: hinge 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.
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.