Comparison of radiographic characteristics and surgical variables between open and PPI patients.
| Variable | Open | PPI | P Valuea |
| Number of patients | 65 (71.4) | 26 (28.6) | |
| Fracture spinal level | |||
| Thoracic (T1-T9) | 34 (52.3) | 6 (23.1) | 0.02a |
| Thoracolumbar (T10-L2) | 31 (47.7) | 20 (76.9) | |
| AO classificationb | |||
| A—compression fractures | 17 (26.2) | 13 (50.0) | 0.007a |
| B—tension band injuries | 22 (33.8) | 11 (42.3) | |
| C—translational injuries | 26 (40.0) | 2 (7.7) | |
| Instrumented segments | 4.0 ± 1.0 | 3.3 ± 1.3 | 0.003a |
Abbreviation: PPI, percutaneous pedicle instrumentation.
Data presented as n (%) unless otherwise noted.
↵a Indicates statistically significant values with P < 0.05.
↵b Adapted from: Vaccaro AR, et al. AOSpine thoracolumbar spine injury classification system: fracture description, neurological status, and key modifiers. Spine (Phila Pa 1976). 2013;38(23):2028–2037.
c Short-segment construct extends from 1 vertebral level above to 1 level below injury and long-segment anything with more than 3 motion segments.