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hungrybox
Of note, the radial nerve innervates the extensors of the wrist. So the muscles of the anatomic snuffbox are all innervated by the radial nerve.
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hungrybox
This helps you remember that the radial nerve innervates the abductor pollicis LONGUS (abductor pollicis BREVIS is median nerve, ADductor pollicis is the ulnar nerve. These two make sense if you think about the direction the thumb is moving - ending closer to the nerve.)
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meryen13
just to review, if we don't fix this, what gonna happen next? --> avascular necrosis of scaphoid--> non-union. why? because scaphoid has two blood supplies the distal part is mainly volar branch of radial a. and the proximal part is mainly dorsal branch of radial a.
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submitted by โhungrybox(1277)
The anatomic snuffbox is formed by the tendons of the extensor pollicis brevis, the abductor pollicis longus, and the extensor pollicis longus. (figure)
The floor is formed by the scaphoid bone, and it is here that one can palpate for a possible fractured scaphoid.
Source: Gray's Anatomy Review