Venous epidural spaces Spinal and Cranial homologies and new classification of dural AVS
Geibprasert Sasikan MD
Department of Radiology, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand Supported by a grant of the WFITN 2006
Spinal Venous epidural spaces
Osteo (cartilaginous)-epidural
Ventral spinal epidural Vertebral body
Epidural-leptomeningeal
Lateral Spinal epidural
Osteo (membranous)-epidural
Posterior spinal epidural veins
Ventral epidural space related to the notochord; no primary role in pial venous drainage. Pial reflux if thrombosis or high flow shunt
Lateral epidural space primary related to pial venous drainage; reflux always present Posterior epidural space related to the confluence of posterior epidural venous plexuses and bony draining veins; pial reflux if thrombosis or high flow shunt.
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