Which term describes movement that traces a circle or cone around a joint?

• A. Flexion
• B. Pronation
• C. Extension
• D. Elevation

Answer: (C)

Circumduction describes a circular or conical motion at a joint, produced by a sequence of movements—flexion, abduction, extension, and adduction—so the moving end traces a circle while the proximal segment stays relatively fixed. This motion is typical at ball-and-socket joints like the shoulder or hip. Flexion bends the joint to reduce the angle, extension straightens to increase the angle, pronation is a rotation of the forearm, and elevation is lifting a part upward. Because circumduction involves combining several movements to describe a circular path, it’s the correct concept here, even though it isn’t captured by the listed single movements.