What type of joint allows for the greatest range of movement?

• A. Hinge joint
• B. Ball and socket joint
• C. Pivot joint
• D. Fixed joint

Answer: (B)

The ball and socket joint allows for the greatest range of movement due to its unique anatomical structure. In this type of joint, the rounded end of one bone fits into the concave socket of another bone, allowing for multi-directional movement and rotation. This design enables movements such as flexion, extension, abduction, adduction, and rotational motions, giving it a versatile range of motion.

In contrast, hinge joints, like the elbow and knee, primarily allow movement in one plane, similar to the motion of a door opening and closing. Pivot joints provide a limited rotational movement around a single axis, as seen in the joints between the first and second cervical vertebrae, and fixed joints completely restrict movement, as they are fused and do not allow any flexibility or movement at all.