| IVM | Intervertebral motion |
| QMA | Quantitative Motion Analysis |
| SDH | Standardized Disc Height |
| TI-Index | Translational Instability Index |
| AVI-Index | Anterior Vertical Instability Index |
| PVI-Index | Posterior Vertical Instability Index |
| AUC | Area Under the Curve |
| FECA | Federal Employees’ Compensation Act |
| AOMSI | Alteration Of Motion Segment Integrity |
| AMA | American Medical Association |