Neuroanatomy basics · USMLE Step 1

A patient with tabes dorsalis has positive Romberg sign. Which tract is primarily affected?

  1. Spinothalamic tract
  2. Dorsal column pathway
  3. Corticospinal tract
  4. Vestibulospinal tract
Show answer and explanation

Correct answer: Dorsal column pathway

Tabes dorsalis affects the dorsal columns, impairing proprioception and vibration sense. Patients rely on visual input to maintain balance.

Difficulty: Medium Question 5 of 20

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