Contents of anatomical snuff box are (A)Radial Artery (B)Tendon of Abductor Poilicis longus (C)Tendon of extensor poilicis brevis (D)Scaphoid bone (E)Superficial cutaneous branch of radial nerve

Anatomical Snuff Box - BDC4th/ Vol. 1130 ♦ It is a triangular depression in lateral side of wrist seen best when thumb is extended ♦ Boundaries ● Anterior - Tendon of abductor Pollicis lonus Tendon of extensor Pollicis brevis ● Posterior - Tendon of extensor pollids iongus ● Above ♦ Styloid process of radius ♦ Floor – ScaphoidQ & trapezium bone ♦ Crossed by radial A Anatomical Snuff Box – snell’s 8th/533-35 ♦ It is a depression in the skin that lies distal to styloid process of radius. ♦ Boundaries ● Medial ● Tendon of Extensor pollicis longus ● Lateral ● Tendon of abductor pollicis longus ● Tendon of Extensor pollicis brevis ♦ Floor ● Proximally-styloid process of radius ● Distally-base of rst metacarpal bone of thumb ♦ B/w these bones , beneath the oor lies the scaphoid & the trapezium (felt but not identiable) ♦ Radial Artery - Can be palpated ♦ Cephalic vein - Can also someti mes be recognised crossing the box as it ascends the forearm Mnemonics Floor - FiRST Fi- First Metacarpal bone R- Radial Styloid S-Scaphoid bone T- Trapezium Contents - VAN V- Cephalic vein A - Radial artery N - Radial Nerve (cutaneous Branch) Clinical signicance of anatomical snuff box: • The pulsations of radial artery can be felt in the anatomical box. • The tenderness in the anatomical box indicates fracture of scaphoid bone. • The cephalic vein at this site is often used for giving intravenous uids. • The supercial branches of the radial nerve can be rolled over the tendon of extensor pollicis longus. Anatomical Snuff Box Anatomical Snuffbox is a triangular depression on the lateral aspect of wrist immediately distal to the radial styloid process, that becomes prominent when thumb is fully extended Boundaries Floor Contents Lateral /Anterior wall ● Abductor Pollicis longus (Radially) ● Extensor Pollicis Brevis (Medially') Medial /Posterior wall ● Extensor Pollicis ● Radial styloid ● Scaphoid (smooth convex articular surface) ● Trapezium ● Base of First Metacarpal ● Cephalic vein ● Radial artery ● Supercial radial nerve