- See:
- DeQuervain's Disease
- Differential Diagnosis
- Discussion:
- snuff box is depression within the borders formed by EPB & EPL;
- distal border is formed by prominent edge of base of first metacarpal & proximal border is formed by styloid process of the radius;
- lies just dorsal and distal to the radial stylid process;
- radial border of snuff box is composed of APL & EPB tendons which pass over radial styloid process & etch groove on its lateral aspect;
- both travel through Tunnel I;
- ulnar border of snuff box is EPL tendon & floor of scaphoid bone;
- occasionally deep branch of radial artery is palpable where it crosses the scaphoid bone;
- termainal branches of superficial radial nerve are also palpable where they cross EPL tendon;
- terminal branches of the musculocutaneous nerve and the radial nerve, as well as the radial artery, crosses the snuff box;
- floor consists of the dorsal tubercle of the trapezium, as well as portion of the dorsal surface of th scaphoid tubercle