Pronation
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Rotation of the forearm that turns the palm down, rotating the radius on the ulna.
Detail
Pronation is rotation on the axis of bone, specifically applied to the forearm, as in turning the hand down by rotating the radius on the ulna. At the end of the movement the palms should face away from you. It is a function of the brachioradialis. Source attributes the movement terminology to Thompson (1989); the radioulnar joint movement diagram is from Harter (1991).
Key facts
- Pronation = forearm rotation turning the palm down (radius rotates on the ulna).
- End position: palms face away from you.
- Produced (in part) by the brachioradialis.
Connections
- Supination — the opposite forearm rotation.
- Brachioradialis — pronates the forearm.
Sources
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Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.