Neuroanatomy USMLE Step 1 Practice Question
A 22-year-old male football player presents to the team physician with a shoulder injury sustained during tackle. Vital signs: BP 128/82, HR 98, RR 16, Temp 37.2°C, SpO2 98%. Preliminary x-ray demonstrates inferior dislocation of the humerus with intact greater tuberosity. Physical examination reveals weakness in lateral rotation and abduction of the arm. Sensory examination over the lateral shoulder is intact. Which nerve is most likely affected by this injury?
Answer choices
- AThoracodorsal
- BSuprascapular
- CAxillaryCorrect answer
- DDorsal scapular
- ERadial
- FMusculocutaneous
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