An infarction in the vascular distribution of the anterior cerebral artery which supplies the majority of the medial surface of the cerebral hemispheres, and provides branches (including Heubner's artery) to the anterior limb of the internal capsule, head of the CAUDATE NUCLEUS, and anterior GLOBUS PALLIDUS. Clinical manifestations may include contralateral lower extremity weakness and sensory loss. Bilateral anterior cerebral artery infarctions are associated with abulia, PARAPLEGIA, and URINARY INCONTINENCE. (From Adams et al., Principles of Neurology, 6th ed, pp789-93).