Flashcards in Anatomical Snuffbox Deck (19):
What is the anatomical snuffbox?
A triangular depression
Where is the anatomical snuffbox found?
On the lateral aspect of the dorsum of the hand
At the level of the carpal bones
When is the anatomical snuffbox best seen?
When the thumb is abducted
What shape is the anatomical snuffbox?
What are the borders of the anatomical snuffbox?
What forms the ulnar border of the snuffbox?
Tendon of the extensor pollicis longus
What forms the radial border of the snuffbox?
Tendons of the abductor pollicis longus and extensor pollicis brevis
What forms the proximal border of the snuffbox?
Styloid process of the radius
What forms the floor of the snuffbox?
Carpal bones- scaphoid and trapezium
What forms the roof of the anatomical snuffbox?
What is the main contents of the snuffbox?
Branch of radial nerve
Where does the radial artery cross?
The floor of the anatomical snuffbox, in an oblique manner
Where does the radial artery run?
Deep to the extensor tendons
Where do the terminal branches of the superficial branch of the radial nerve run?
Subcutaneously, across the roof of the snuffbox
What do the terminal branches of the superficial branch of the radial nerve provide?
Innervation to the skin of the lateral 3 1/2 digits on the dorsum of the hand, and the associated palm area
Where does the cephalic vein cross the anatomical snuffbox?
What articulates in the anatomical snuffbox?
The scaphoid and radius, to form the wrist joint
What happens in the event of a blow to wrist?
The scaphoid takes most of the force