Table 5.
Radiographic measures- Canal dimension (CSA and diameter of dural sac) changes evaluated on pre-and postoperative MRI
| Characteristic | Assessment time | DP group | SP group | p-value |
|---|---|---|---|---|
| CSA (mm2) | Pre | 55.3 ± 34.3 | 54.7 ± 21.1 | 0.463 |
| Post (2 wk) | 78.4 ± 38.1 | 77.2 ± 41.1 | 0.764 | |
| Pre→ 2 wk change | 21.9 ± 23.2 | 22.6 ± 28.1 | 0.684 | |
| Diameter (mm) | Pre | 5.9 ± 2.6 | 5.6 ± 2.4 | 0.990 |
| Post (2 wk) | 7.9 ± 2.4 | 7.7 ± 2.1 | 0.826 | |
| Pre→ 2 wk change | 2.0 ± 2.2 | 2.1 ± 2.0 | 0.925 |
All values are in mean ± standard deviation
DP dual position, SP single position, CSA cross-sectional spinal canal area