The Boundaries
- The posterior border of the snuffbox is the tendon of the extensor pollicis longus.
- The anterior border (closest to the edge of the hand) is a pair of parallel and intimate tendons, of the extensor pollicis brevis and the abductor pollicis longus. (Accordingly, the anatomical snuffbox is most visible, having a more pronounced concavity, during thumb extension.)
- The proximal border is formed by the styloid process of the radius
- The distal border is formed by the approximate apex of the schematic snuffbox isosceles triangle.
- The floor of the snuffbox varies depending on the position of the wrist, but both the trapezium and primarily the scaphoid can be palpated.
Read more about this topic: Anatomical Snuff Box
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