Circumduction is best described as:

• A. A straight line movement
• B. A single-plane rotation
• C. A quick, forceful movement
• D. A combination movement that occurs in all anatomical planes with the proximal end as the pivot point and the distal end moving around this fixed point

Answer: (D)

Circumduction is a cone-shaped motion where the distal segment moves in a circular path around a relatively fixed proximal end. It combines movements across multiple planes—flexion, extension, abduction, and adduction (and sometimes a rotational component)—typically at ball-and-socket joints like the shoulder or hip. This multi-planar, circular tracing around a fixed point is what sets circumduction apart from a straight-line motion, a single-plane rotation, or a quick, forceful action.