Measurement of the interspinous distance. Observe the interspinous split on the continuous line between T11 and T12. Radiograph representing patient classified with B1.2 fracture. Source: Caffaro MFS, Avanzi O. Is there a difference between narrowing of the spinal canal and neurological deficits comparing Denis and Magerl classifications? Spinal Cord 2011;49:297-301