Transparent Posterior Spinal Arteries

Description

Running longitudinally along the dorsolateral aspect of the spinal cord, the paired posterior spinal arteries are rendered as translucent channels that track inferiorly through the vertebral canal. A superior viewpoint clarifies their bilateral course adjacent to the posterior median sulcus, with fine arteriolar offshoots angling laterally toward the dorsal root entry zones. The vessels remain posterior to the anterior spinal artery territory and sit in close relationship to the pial surface and posterior spinal veins. Subtle tapering and branching suggest segmental reinforcement as the arteries descend. Posterior spinal artery anatomy matters when you are teaching or planning around spinal cord perfusion in the posterior two thirds of the cord, where the dorsal columns and dorsal horns depend on this pial network and its anastomoses with radiculopial contributions. That nuance becomes concrete in posterior circulation spinal cord infarction, where patients can present with loss of proprioception and vibration with relative sparing of corticospinal function, and in operative corridors that mobilize the dorsal roots or open the posterior median sulcus for a myelotomy. Ischemic risk often turns on where segmental feeders are sparse. This is the map. Use this artwork in neuroanatomy and neurosurgery teaching materials that contrast anterior spinal artery syndrome with posterior cord ischemia, and in publisher layouts explaining the vertebral canal vasculature without the distraction of osseous detail. It also fits clinical slide decks on spinal vascular malformations and perioperative positioning that can compromise posterior cord flow. Anatomical accuracy verified by SciePro's Medical Advisory Board.