Relationship between Traumatic Spinal Canal Stenosis and Neurologic Deficits in Thoracolumbar Burst FracturesHASHIMOTO, TOMOYUKI, MD; KANEDA, KIYOSHI, MD; ABUMI, KUNIYOSHI, MDSpine: November 1988 - Volume 13 - Issue 11 - p 1268-1272 Original Articel: PDF Only Buy Abstract Author InformationAuthors Using CT scans of 112 consecutive patients with thoracolumbar burst fractures, we Investigated the relationship between traumatic spinal canal stenosis and neurologic deficits. We calculated the stenotlc ratios of the area occupied by the retropulsed bony fragments to the estimated area of the original spinal canal. We also examined the shape of the narrowed canal and the disruption of spinal elements. Burst fractures having the following ratios are at significant risk of neurologic involvement: at T11 to T12 with 35% more, at L1 with 45% or more, and at L2 and below with 55% or more. From the Department of Orthopedic Surgery, Hokkaido University School of Medicine, Sapporo, Japan © Lippincott-Raven Publishers.