A day after a left-sided lumpectomy and axillary dissection, a 63-year-old woman is experiencing difficulty elevating her left arm. She cannot fully raise her upper arm from the side of her body. The median border and inferior angle of the left scapula become unusually prominent when she pushes against the wall with both hands. The innervation of which of the following muscles was most likely injured during the surgery?
A day after a left-sided lumpectomy and axillary dissection, a 63-year-old woman is experiencing difficulty elevating her left arm. She cannot fully raise her upper arm from the side of her body. The median border and inferior angle of the left scapula become unusually prominent when she pushes against the wall with both hands. The innervation of which of the following muscles was most likely injured during the surgery?
💡 Explanation
A day after a left-sided lumpectomy and axillary dissection, a 63-year-old woman is experiencing difficulty elevating her left arm. She cannot fully raise her upper arm from the side of her body. The median border and inferior angle of the left scapula become unusually prominent when she pushes against the wall with both hands. The innervation of which of the following muscles was most likely injured during the surgery?
✓ Correct Answer: D. Serratus anterior
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