anatomical snuffbox

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anatomical snuffbox

a small, cuplike depression on the back of the hand near the wrist formed by the three tendons reaching toward the thumb and index finger as the thumb is abducted and extended.
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ANATOMIC SNUFFBOX

anatomic snuffbox

, anatomical snuffbox
A depression in the skin formed at the posterior base of the thumb when the thumb is extended from the hand. The lateral (outer) wall of the snuff box is formed from the tensed tendons of the abductor pollicis longus and extensor pollicis brevis; the medial wall is formed by the tensed tendon of the extensor pollicis longus; the proximal wall is formed by the styloid process of the radius, and the distal wall is formed by the base of the first metacarpal. Under the floor of the snuff box, the scaphoid and trapezium wrist bones can sometimes be felt, and the radial artery runs under the snuff box as it loops laterally around the thumb.
See: illustration
References in periodicals archive ?
4,6-14,33) The superficial radial artery in our subject differed from this pattern since it originated in the cubital fossa, was superficial along the forearm, and followed a typical course deep to the tendons that border the anatomical snuff box.
The radial artery had normal course in the forearm till the junction between upper two third and lower one third where it turned dorsally and reached the anatomical snuff box and ran superficial to the abductor pollicis longus, extensor carpi radialis brevis and extensor carpi radialis longus along the cephalic vein medially and superficial branch of radial nerve laterally (fig.
The scaphoid is located on the radial side of the wrist in the anatomical snuff box, which is located between the extensor pollicis brevis and extensor pollicis longus tendons.

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