Anatomical snuffbox
Anatomical Snuffbox
The Anatomical Snuffbox (pronounced: /ænəˈtɒmɪkəl snʌfbɒks/) is a triangular deepening on the radial, dorsal aspect of the hand—at the level of the carpal bones, specifically, the scaphoid and trapezium bones forming the floor. The name originates from the use of this surface for placing and then sniffing powdered tobacco, or "snuff."
Etymology
The term "Anatomical Snuffbox" is derived from the historical practice of using this part of the hand to hold snuff (powdered tobacco) before inhaling it. The word "anatomical" refers to the study of the structure of the body.
Structure
The Anatomical Snuffbox is bordered by the tendons of two muscles: the Extensor Pollicis Longus (EPL) and the Extensor Pollicis Brevis (EPB) and Abductor Pollicis Longus (APL). The floor of the snuffbox is formed by the Scaphoid and Trapezium bones, and the tubercle of the scaphoid can be palpated within the snuffbox.
Clinical Significance
The Anatomical Snuffbox is clinically significant as tenderness in this area may indicate a fracture of the Scaphoid Bone, a type of Carpal Bone Fracture. This is a common injury following a fall onto an outstretched hand.
Related Terms
- Carpal Bones
- Extensor Pollicis Longus
- Extensor Pollicis Brevis
- Abductor Pollicis Longus
- Scaphoid Bone
- Trapezium Bone
External links
- Medical encyclopedia article on Anatomical snuffbox
- Wikipedia's article - Anatomical snuffbox
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