Table 2.
Group comparison of different MRI parameters among healthy controls, non-severe AIS and severe-AIS subjects
| Parameters | Sagittal | Coronal | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Controls | Non-severe AIS | Severe-AIS | P-value | Controls | Non-severe AIS | Severe-AIS | P-value | ||
| VB | Wedge angle (˚) | 2.3 ± 0.3 | 2.4 ± 0.4 | 2.6 ± 0.4 | 0.840 | 0.2 ± 0.2 | 2.3 ± 0.3## | 5.9 ± 0.4## ßß | < 0.001** |
| Height ratio (%) | -9.1 ± 0.5 | -5.8 ± 0.8## | -7.1 ± 0.7 | 0.008** | 0.0 ± 0.3 | 4.6 ± 0.7# | 14.7 ± 1.1## ßß | < 0.001** | |
| IVD | Wedge angle (˚) | 0.3 ± 0.3 | -1.0 ± 0.3# | -0.2 ± 0.3 | 0.017* | -0.1 ± 0.2 | 2.7 ± 0.2## | 6.6 ± 0.5## ßß | < 0.001** |
| Height ratio (%) | 0.1 ± 0.1 | 15.6 ± 3.4## | 15.7 ± 3.7## | 0.001** | 1.9 ± 1.2 | 26.8 ± 3.4# | 75.1 ± 7.9## ßß | < 0.001** | |
| NP/ IVD | Distance ratio (%) | 42.0 ± 0.9 | 43.0 ± 1.2 | 44.0 ± 1.0 | 0.155 | 50.0 ± 0.5 | 58.0 ± 1.2## | 69.0 ± 0.8## ßß | < 0.001** |
One-way analysis of variance (ANOVA): *P < 0.05, **P < 0.01; Post hoc test (Bonferroni correction test) in comparison with controls: # P < 0.05, ## P < 0.01; in comparison with non-severe AIS: ß P < 0.05, ßß P < 0.01;
Data expressed as Mean ± Standard error of mean
VB Vertebral body; IVD Intervertebral disc; NP Nucleus pulposus