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Definition: the shallow groove that passes around the shaft of the humerus; it lies between the humeral attachments of the lateral and medial heads of the triceps brachii; the radial nerve and deep brachial artery course within the groove.
Synonym(s): sulcus nervi radialisTA, groove for radial nerve, musculospiral groove, spiral groove
Examples: glitazone, GI cocktail, etc.
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