Medial Orbitofrontal Artery Viewed from Below

Description

Arising from the anterior cerebral artery near the anterior communicating complex, the medial orbitofrontal artery courses anteriorly along the medial orbital surface of the frontal lobe, closely applied to the gyrus rectus and the medial orbital gyrus. From an inferior (basal) brain view, its fine cortical branches can be followed toward the frontal pole, running medial to the olfactory tract and bulbs and anterior to the optic chiasm in the region of the anterior perforated substance. Nearby vascular landmarks typically include the A1 and proximal A2 segments of the anterior cerebral arteries, the supraclinoid internal carotid arteries laterally, and the proximal middle cerebral arteries entering the sylvian fissures. Small. Midline. Unforgiving. This perspective matters because the medial orbitofrontal artery sits in the operative corridor for aneurysms of the anterior communicating artery and distal anterior cerebral artery, where frontal lobe retraction and gyrus rectus manipulation can threaten orbitofrontal perforators and cortical supply. Infarction in this territory can contribute to medial frontal lobe syndromes, including abulia and impaired executive function, and may complicate subarachnoid hemorrhage management when vasospasm involves the anterior cerebral circulation. For teaching, it also clarifies why basal frontal contusions in head trauma often occur near the orbital gyri, where cortical surfaces and vessels lie directly against the anterior cranial fossa. Neurosurgery and neuroanatomy courses will find this basal vascular map useful for correlating the anterior cerebral artery branching pattern with the olfactory and optic pathways, and for orienting trainees to the brain’s base before moving to angiography, CTA, or MRA interpretation. Medical publishers can pair it with chapters on anterior circulation aneurysms, frontal lobe vascular territories, and cranial nerve topography in an inferior view. Anatomical accuracy verified by SciePro's Medical Advisory Board.