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Glossary Term

Ball And Socket

Ball and socket joints are synovial joints in which one bone's rounded end fits into another bone's cup-like depression. These joints allow for a wide range of motion in multiple axes around a common center. Examples of ball and socket joints include the hip and shoulder. Synonyms include spheroidal joint and spheroid joint.

Ball and Socket Joint: A ball and socket joint (also called a spheroid joint or spheroidal joint) is a synovial joint in which the rounded or spherical end of one bone fits into a cup-like depression of another bone. The distal bone is capable of motion around an indefinite number of axes, which have one common center. Examples include the hip and shoulder (glenohumeral) joints.