Which joint has limited motion?

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

Answer: (C)

Limited motion occurs in joints that are amphiarthrotic, meaning they are slightly movable and provide stability with cushioning. Ball-and-socket, hinge, and pivot joints are all diarthrotic, freely movable joints that allow a wide range of motion in multiple directions or axes. A symphysis, on the other hand, is a type of cartilaginous joint where bones are joined by a fibrocartilage pad. This design restricts movement to a small, controlled amount, offering stability and shock absorption. Examples include the pubic symphysis and the joints between vertebral bodies. Because of this slight mobility, the symphysis best fits the description of a joint with limited motion.