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Answer :
Final answer:
When a mid-shaft fracture of the humerus leads to nerve impingement, the condition that is most likely to occur is wrist drop, due to damage to the radial nerve affecting the extensor muscles of the wrist and fingers. So, the correct answer is, a) Wrist drop.
Explanation:
The question refers to a scenario involving a mid-shaft fracture of the humerus leading to nerve impingement. In the context of the humerus, the mid-shaft region is proximal to where the radial nerve runs in the radial groove of the humerus.
This nerve's function primarily impacts the extensor muscles of the wrist and fingers, which are crucial for wrist extension. An injury to this nerve resulting from a mid-shaft humeral fracture often leads to a condition known as wrist drop, characterized by the inability to extend the wrist and fingers, causing the wrist to hang in a flexed position.
Other conditions mentioned in the multiple-choice options include claw hand, resulting from ulnar nerve damage; ape hand, tied to median nerve impairment; and Popeye deformity, associated with a rupture of the biceps brachii tendon rather than nerve damage. Therefore, when considering a humerus mid-shaft fracture with nerve impingement, wrist drop is the most foreseeable clinical presentation.
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