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Checklist for the diagnosis of clinical instability in the lumbar spine
| Element | Point value |
| Anterior elements destroyed or unable to function | 2 |
| Posterior elements destroyed or unable to function | 2 |
| Radiographic criteria | 4 |
| Flexion-extension radiographs | |
| Sagital plan translation >4.5 mm or 15% (2pt) | |
| Relative sagittal plane angulation >22 degress (2pt) | |
| Cauda equine damage | 3 |
| Dangerous loading anticipated | 1 |
