Gross Anatomy USMLE Step 1 Practice Question
A 27-year-old volleyball player presents with 3-month history of posterior shoulder pain and weakness after repeated overhead serving. Vital signs: BP 118/76, HR 82, RR 14, Temp 37°C, SpO2 98%. Physical examination demonstrates difficulty initiating abduction and weakness with external rotation. Deltoid strength testing is intact, and sensation over the lateral shoulder remains normal. Shoulder radiographs show no fractures or structural abnormalities. Which of the following nerves is most likely affected?
Answer choices
- ALong thoracic nerve
- BDorsal scapular nerve
- CSuprascapular nerveCorrect answer
- DThoracodorsal nerve
- EAxillary nerve
- FSubscapular nerve
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