Dorsum Of The Hand

Dorsum Of The Hand

Question 1. Write a short note on the anatomical snuffbox.
Answer.

Anatomical Snuffbox is an elongated triangular depression seen on the dorsal aspect of the 1st metacarpal when the thumb is hyperextended.

Anatomy of the Dorsum of the Hand

Anatomical Snuffbox Boundaries

Medial:

Tendon of extensor pollicis longus.

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Anatomical Snuffbox Lateral

• Tendon of the abductor pollicis longus
• Tendon of extensor pollicis brevis

Floor:

Scaphoid, trapezium.

Roof:

Deep fascia stretches between the medial and lateral boundaries.

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Anatomical Snuffbox Contents

• Radial artery

Structures crossing the roof

• Cephalic vein
• Terminal branches of the superficial radial nerve

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Anatomical Snuffbox Applied Anatomy

• Tenderness in the region of the anatomical box indicates a fracture of the scaphoid.
• Pulsations of the radial artery can be felt at this site.