Transparent Blood Vessels of the Spinal Cord, Posterior View

Description

Translucent rendering of the male spinal cord and surrounding vasculature is presented from a posterior perspective, centered on the lower thoracolumbar canal with the pelvis providing inferior context. Paired posterior spinal arteries course longitudinally along the dorsolateral surface of the cord, flanking the posterior median sulcus and giving off small circumferential branches that anastomose with pial vessels. Segmental radiculomedullary contributions approach the cord with the dorsal roots, while accompanying veins form a more reticular plexus that tracks along the cord and communicates with the internal vertebral venous plexus. Orientation is clear. Superior structures sit cranial to the pelvic brim, with vascular channels tapering distally toward the conus region. Posterior cord vascular anatomy matters when you need to localize cord ischemia and anticipate iatrogenic risk during posterior spinal exposure. Occlusion or hypoperfusion of the posterior spinal arteries preferentially compromises the dorsal columns, producing loss of vibration and proprioception with relative sparing of corticospinal and spinothalamic tracts, a pattern that helps separate posterior spinal artery syndrome from anterior spinal artery infarction. The long, segmentally reinforced supply shown here also supports discussion of why thoracolumbar levels can be vulnerable during aortic procedures, hypotensive episodes, or radicular vessel sacrifice, even when the operative corridor is posterior. Neuroanatomy and gross anatomy teaching sessions can use this plate to connect surface cord landmarks to the pial arterial network and to the venous drainage pathways that explain engorgement with raised intraabdominal pressure or epidural venous bleeding. It also fits spine surgery texts, interventional neuroradiology primers, and neurology board review materials that contrast dorsal column signs with vascular territories at the lumbar enlargement and conus. Anatomical accuracy verified by SciePro's Medical Advisory Board.