A 45-Year-Old Woman Is Evaluated Due to Left-Hand Weakness

A 45-year-old woman is evaluated due to left-hand weakness. 2 weeks ago, she started complaining of numbness and tingling in the left hand, which is exacerbated at night. The patient does not report neck pain or previous trauma. She has been working as a secretary for the last 15 years. Physical examination shows loss of sensation in the fourth and fifth digits. There are no abnormalities detected in the left-hand examination. The options most likely have weakness in which of the following functions?

A) Elbow extension
B) Shoulder abduction
C) Wrist abduction
D) Wrist adduction
E) Wrist extension

Correct Answer:

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