Ball and Socket Joints

Description: Ball and socket joints are multiaxial, synovial joints. They are lubricated by a clear, sticky fluid called synovia. Description Also called spheroidal joints, the ball and socket joints are formed by the rounded or "ball-shaped" head of one bone fitting into the cup-like cavity of another bone. The articulating bone fits into the cavity and allows the distal bone to move around. The hip and shoulder joints are examples of the ball and socket joint.