Question
Identify the boundaries of the anatomical structure in the image
| A. |
Extensor pollicis longus
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| B. |
Abductor pollicis longus
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| C. |
Styloid process of the radius
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| D. |
All of the above
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Show Answer
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Correct Answer � D
Explanation
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Ans: D. All of the above
The marked structure is the anatomical snuff box.
Boundaries are:
- The medial border (ulnar side) of the snuffbox is the tendon of the extensor pollicis longus.
- The lateral border (radial side) is a pair of parallel and intimate tendons of the extensor pollicis brevis and the abductor pollicis longus.
- The proximal border is formed by the styloid process of the radius
- 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.
