AOSpine Thoracolumbar Spine Injury Classification System.
Type A | COMPRESSION FRACTURE |
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A0 | No fracture of the vertebral body - Fracture of the spinous or transverse process |
A1 | Wedge compression fracture with single endplate involvement and no posterior wall involvement |
A2 | Split or pincer type fracture |
A3 | Incomplete burst fracture: Single endplate fracture |
A4 | Complete burst fracture |
Type B | TENSION BAND INJURIES |
B1 | Monosegmental bony posterior band injury |
B2 | Posterior tension band disruption: Bony and/or ligamentous |
B3 | Hyperextension injury |
Type C | DISPLACEMENT/ TRANSLATIONAL INJURIES |
C | Displacement beyond physiological range |