When measuring wrist ulnar deviation with a goniometer, the movable arm should align with which landmark?

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Multiple Choice

When measuring wrist ulnar deviation with a goniometer, the movable arm should align with which landmark?

Explanation:
When measuring wrist ulnar deviation with a goniometer, the movable arm should be aligned with the midline of the third metacarpal. This places the distal reference along the long axis of the hand, so the measured angle accurately reflects how far the hand moves toward the ulnar side relative to the forearm. The third metacarpal provides a stable, consistent reference for this motion, whereas the other landmarks listed aren’t used to guide the distal arm in this standard measurement.

When measuring wrist ulnar deviation with a goniometer, the movable arm should be aligned with the midline of the third metacarpal. This places the distal reference along the long axis of the hand, so the measured angle accurately reflects how far the hand moves toward the ulnar side relative to the forearm. The third metacarpal provides a stable, consistent reference for this motion, whereas the other landmarks listed aren’t used to guide the distal arm in this standard measurement.

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