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Saggital diameter (mm) of the spinal canal between C2 and C6
| Group | C2 | C3 | C4 | C5 | C6 |
|---|---|---|---|---|---|
| S1 | 18.7±1.7 | 18.1±1.9 | 18.5±2.8 | 19.3±1.8 | 18.2±1.5 |
| K1 | 17.6±2.1 | 17.3±2.6 | 16.9±2.9 | 17.2±2.5 | 17.3±2.6 |
| S2 | 18.2±2.0 | 17.8±2.5 | 17.7±2.0 | 17.9±1.9 | 18.8±2.2 |
| K2 | 18.0±1.9 | 17.3±2.5 | 17.6±2.3 | 18.1±2.7 | 17.9±2.3 |
| F | - | - | - | 3.02 | - |
| P | - | - | - | 0.02 | - |
