Fig. 9

Axial loading (vertical compression injury). a Schematic showing a vertical compression injury. Compressive force is exerted vertically to the spinal column with neck in the neutral position (30-degree flexion) at the time of injury, resulting in pure axial loading injury and compressive failure of the anterior column. The posterior column remains intact or with increasing force fails in compression. b Axial CT shows marked comminution of the vertebral body with retropulsion of the fracture fragment from the posterior cortex in to the spinal canal (straight arrow) suggestive of burst fracture. Associated unilateral laminar fractures (curved arrow) are commonly seen