Clinical Study
A New CT Method for Assessing 3D Movements in Lumbar Facet Joints and Vertebrae in Patients before and after TDR
Table 1
Individual patient’s movement and facet joint magnitude at L5-S1 level before and after surgery.
| | Rotation (degrees) | 3D facet translation (mm) | Patient | Sagittal | Coronal† | Transverse | Right | Left | | Before | After | Before | After | Before | After | Before | After | Before | After |
| 1 | 9.3 | 9.6 | 0.4 | 0.7 | 0.0 | 0.9 | 4.8 | 3.5 | 5.7 | 6.7 | 2 | 9.5 | 8.6 | 0.5 | 0.5 | 0.1 | 1.0 | 5.0 | 7.6 | 5.0 | 3.7 | 3 | 3.7 | 3.8 | 0.1 | 0.2 | 0.4 | 0.0 | 2.5 | 2.6 | 1.7 | 1.7 | 4 | 5.5 | 5.3 | 0.5 | 3.2 | 0.9 | 0.5 | 3.7 | 3.0 | 1.4 | 0.3 | 5 | 8.2 | 5.9 | 0.1 | 0.8 | 0.1 | 0.2 | 3.8 | 3.5 | 4.1 | 3.4 | 6 | 4.3 | 7.4 | 0.5 | 1.9 | 0.5 | 0.6 | 1.7 | 4.0 | 5.8 | 3.1 | 7 | 2.9 | 6.6 | 0.2 | 0.8 | 0.1 | 0.6 | 2.7 | 4.0 | 0.6 | 4.4 | 8 | 6.1 | 6.9 | 0.2 | 2.7 | 0.6 | 0.3 | 3.1 | 2.6 | 1.9 | 4.1 | 9 | 4.3 | 5.0 | 0.5 | 0.2 | 0.8 | 0.4 | 2.7 | 3.7 | 4.7 | 4.6 | 10 | 5.3 | 7.4 | 0.4 | 0.4 | 0.8 | 0.0 | 2.8 | 3.6 | 2.3 | 2.5 |
| Median (±SD) | 5.4 (±2.3) | 6.8 (±1.7) | 0.4 (±0.2) | 0.8 (±1.1) | 0.5 (±0.3) | 0.5 (±0.3) | 3.0 (±1.0) | 3.5 (±1.4) | 3.2 (±1.9) | 3.7 (±1.7) |
| Minimum | 2.9 | 3.8 | 0.1 | 0.2 | 0.0 | 0.0 | 1.7 | 2.6 | 0.6 | 0.3 |
| Maximum | 9.5 | 9.6 | 0.5 | 3.2 | 0.9 | 1.0 | 5.0 | 7.6 | 5.8 | 6.7 |
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Significantly different before and after operation ().
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