A triangular depression on the radial dorsal pollicar aspect of the hand at the level of the scaphoid and trapezium (carpal bones) when the thumb is extended. The radial pulse is palpable by light pressure on the anatomic snuffbox.
The snuffbox is produced by extending the thumb; the space is bounded posteriorly by the tendon of the extensor pollicis longus and anteriorly by the tendons of the extensor pollicis brevis and adductor pollicis longus; the space is crossed superficially by the digital rami of the superficial branch of the radial nerve, and at the floor, is crossed by the radial artery and cephalic vein. The floor is formed by the trapezium and the scaphoid bone, a fracture of which can be identified by digital pressure in the AS bordered laterally by the extensor pollicis brevis and abductor pollicis longus tendons and medially by the tendon of the extensor pollicis longus. The name derives from the depression in which gentlemen (and others) placed snuff for a good snort/snuff. The sobriquet “Tequila triangle” refers to the anatomic snuffbox use for drinking tequila.
Synonym Anatomical snuffbox