Table 2.
Comparison and change in the anterior, posterior, anteroposterior and transverse cord lengths between the C2–C3 (normal) and maximal cord compression segments (Cmax: length at the maximal cord compression segment).
| Length (mm) | C23 (Mean) | Maximal Cord Compression (Mean) |
Difference (C23-Cmax) |
p-Value |
|---|---|---|---|---|
| Anterior | 3.1 ± 0.6 | 1.0 ± 1.0 | 2.0 ± 1.2 | <0.001 * |
| Posterior | 4.3 ± 0.54 | 4.2 ± 0.8 | 0.1 ± 0.8 | 0.187 |
| Anteroposterior (A-P) |
7.4 ± 1.0 | 5.3 ± 1.4 | 2.1 ± 0.5 | <0.001 * |
| Width | 12.4 ± 1.2 | 14.2 ± 1.9 | −1.8 ± 0.2 | <0.001 * |
| A-P/Width | 0.6 ± 0.1 | 0.3 ± 0.2 | 0.3 ± 0.1 | <0.001 * |
*: p < 0.05.