Gross Anatomy USMLE Step 1 Practice Question
A 32-year-old woman undergoes excision of a posterior cervical triangle mass. Postoperatively, she reports difficulty retracting her scapula medially toward the spine. Vital signs are stable (BP 118/76, HR 82, RR 14, Temp 37°C). Physical examination reveals preserved shoulder abduction and no scapular winging. Electromyography shows denervation of the rhomboid muscles. She denies neck pain or trapezius weakness. Which of the following nerves was most likely injured during the procedure?
Answer choices
- ALong thoracic nerve
- BThoracodorsal nerve
- CDorsal scapular nerveCorrect answer
- DSuprascapular nerve
- EAxillary nerve
- FAccessory nerve (CN XI)
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