A nurse is collecting data from a client about range-of-motion for various joints. Which of the following images should the nurse identity as an example of a ball and socket joint?

A: Image A shows the ankle area, which is an example of a hinge joint, not a ball and socket joint. Hinge joints allow movement in one plane, such as flexion and extension, similar to the motion of a door hinge. The ankle allows primarily up-and-down movement but does not rotate in multiple directions like a ball and socket joint would. B: Image B shows the hip area, which represents a ball and socket joint. In a ball and socket joint, the round head of one bone fits into the cup-like socket of another bone, allowing movement in multiple directions. The hip and the shoulder are classic examples of ball and socket joints, permitting rotation, flexion, extension, abduction, and adduction.