What is the most common symptom of Anterior Cerebral Artery (ACA) syndrome?

The most common symptom of Anterior Cerebral Artery (ACA) syndrome is contralateral hemiparesis and hemisensory loss of the lower extremity. This is primarily due to the ACA's vascular distribution, which feeds the medial portions of the frontal and parietal lobes, areas responsible for motor and sensory control of the lower body.

In cases of ACA syndrome, patients often exhibit weakness (hemiparesis) and sensory deficits primarily in the lower extremities rather than the upper extremities. This is an important characteristic distinguishing it from other types of strokes, particularly those involving the Middle Cerebral Artery (MCA), which affects the upper extremities more significantly. The specific function of the regions supplied by the ACA explains why deficits follow this presentation pattern, demonstrating the anatomical correlation between the artery's function and clinical symptoms.

Understanding the functional significance of the ACA's territory provides insight into patient care and rehabilitation needs for individuals affected by this type of vascular event.