Sensory Loss over the lateral deltoid! - USMLE Forums
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Old 08-15-2011
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MusculoSkeletal Sensory Loss over the lateral deltoid!

An 18-year-old professional basketball player goes up for a dunk and has his legs taken out from underneath him. He lands awkwardly on his arm. On examination, the patient has an anteriorly dislocated shoulder, which is reduced. Subsequently, the player complains of lack of sensation over the lateral aspect of his deltoid. Which nerve has likely been injured?

A. Musculocutaneous nerve
B. Radial nerve
C. Posterior interosseous nerve
D. Axillary nerve
E. Median nerve
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  #2  
Old 08-15-2011
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Default D)Axillary nerve

Deltolid-->axillary nerve ( most commonly injured in shoulder dislocation)
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Old 08-15-2011
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axillary nerve......
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D) Axillary nerve
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axillary nerve
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D. Axillary nerve
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Old 08-16-2011
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Correct Answer

The correct answer is D.
The axillary nerve is most commonly injured in anterior shoulder dislocations. It provides sensation to the lateral aspect of the right shoulder over the deltoid.

The musculocutaneous nerve provides sensation to the lateral aspect of the arm.

The radial nerve divides into the posterior interosseous nerve (PIN) and the superficial radial nerve at the level of the radial neck. The PIN provides sensation to the wrist capsule, and the superficial radial nerve provides sensation to the dorsum of the hand at the level of the distal interphalangeal joints.

The median nerve provides sensation to the radial three and a half digits.
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