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A 15-year-old boy is brought to the emergency department because he was struck on the arm with a hockey stick. His hand is numb and he cannot extend his hand at the wrist. X-rays show fracture in the middle of the humerus. Which of the following nerve is most likely damaged?
A. Median
B Musculocutaneous
C Radial
D. Ulnar
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mid shaft humerus....Radia N corss....
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Option C is correct.
The radial nerve innervates the extensor muscles of the forearm and receives sensory information from the skin on the lateral dorsal hand. Fractures involving the midshaft of the humerus place the radial nerve at risk for injury because the nerve spirals down the shaft.
