Anatomical Snuff Box

ANATOMICAL SNUFF BOX (AIPGMEE 2009)


When the thumb is fully extended the tendon is separated from extensor pollicis brevis by a triangular depression or fossa, the so-called 'anatomical snuff-box'. 


Bony structures can be felt in the floor of this fossa by deep palpation. In proximal to distal order they are the radial styloid, the smooth convex articular surface of the scaphoid, the trapezium, and the base of the first metacarpal.

The tendons of the APL and EPB bound the anatomical snuff box anteriorly(laterally), and the tendon of the EPL bounds it posteriorly(Medially).


Contents
 1. Cephalic Vein
 2. Radial Artery 
 3. Superficial Radial Nerve