A patient has recently suffered a cerebrovascular accident and demonstrates left-sided hemiplegia with the leg more severely affected than the arm. The most likely location of this patient's infarction is which one of the following arteries?
A. Anterior cerebral
B. Middle cerebral
C. Posterior cerebral
D. None of the above
ANS: A
Rationale: Occlusion of the anterior cerebral artery results in contralateral hemiplegia and hemisensory loss. These deficits are more severe in the lower limb than in the face and upper extremity because the medial sensorimotor cortex and adjacent white matter are affected.
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