Upper Cervical Ligamentous Instability
| Sharp-Purser Test (transverse ligament)Transverse Ligament | 69 | 98 | — | ||
| Alar Ligament Stress Test (lateral flexion / rotation in flexion)Alar Ligament | — | — | — | ||
| Transverse Ligament Stress Test (anterior shear)Transverse Ligament | — | — | — | ||
| Tectorial Membrane Stress TestTectorial Membrane | — | — | — | ||
| Lateral Shear Test (atlantoaxial)Atlantoaxial Lateral Shear | — | — | — |