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A cyclist following his routine exercises develops tingling and a numbness sensation on the volar aspect of his ulnar 1 and 1/2 fingers. The dorsal side shows no abnormal findings. Where does the nerve in question normally lie?
A Superficial to the bicipetal aponeurosis
B Beneath the flexor retinaculum
C In Guyon's canal
D With the brachial artery
E In the anatomical snuff box
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ANSWER IS C.
.
BOUNDRIES OF ANATOMICAL SNUFF BOX
The snuffbox is bordered above by the tendon of the extensor pollicis longus and below by a pair of parallel and intimate tendons, of the extensor pollicis brevis and the abductor pollicis longus. Accordingly, the anatomical snuffbox is most visible, having a more pronounced concavity, during thumb extension or abduction. The styloid process of the radius forms the proximal border while the distal border is formed by the approximate apex of the schematic snuffbox isosceles triangle. The floor of the snuffbox varies depending on the position of the wrist, but both the trapezium and primarily the scaphoid can be palpated.
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antomical snuff box
extensor pollicis longus -laterally
extensor pllicis brevis - medially
Ihope I didnot make mistake...
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ok lucky posted this..
Thanks
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pashna23 ,I am busy in job..nowadays very hectic job..and tiresome job thats why I am away...
anyways thanks and good luck
