Table 7: X-ray signs ranked in order taking into consideration both reproducibility (Kappa) and accuracy (sensitivity and specificity).
| X-ray sign | Sensitivity | Specificity | Kappa Category |
| Loss of parallelism (P) | 70.0 | 96.5 | Moderate |
| Fusiform (F) | 53.6 | 94.7 | Moderate |
| Kager's sign (K) | 84.8 | 71.9 | Fair |
| Disruption (D) | 48.6 | 97.4 | Fair |