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Anatomy · Joints
Sample itemWhich movement is permitted at the proximal radioulnar joint?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Pronation and supination
The proximal radioulnar joint is a pivot synovial joint allowing radial head rotation during pronation and supination of forearm.
Option by option
A. Ankle inversion
Inversion occurs at subtalar joint.
B. Shoulder abduction
Abduction occurs at shoulder.
C. Pronation and supination (correct)
Correct: pivot movement rotates radius around ulna.
D. Flexion and extension only
Flexion is mainly elbow hinge movement.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.