Table 3.
The measured value of each parameter in the mismatch and balance groups
| Variable | Mismatch group |
Balance group |
p-value (Δ1 vs. Δ2) | ||||
|---|---|---|---|---|---|---|---|
| Pre-OP | Post-OP | Δ1/p-value | Pre-OP | Post-OP | Δ2/p-value | ||
| Occipital slope (°) | 2.9±4.6 | 3.5±4.6 | 0.6/0.98 | 8.3±5.7 | 7.4±5.4 | -0.9/0.48 | 0.58 |
| C2 slope (°) | -19.1±4.6 | -15.9±6.1 | 3.2/<0.01 | -5.1±6.3 | -5.8±6.5 | -0.7/0.62 | <0.01 |
| C7 slope (°) | -20.1±8.3 | -23.2±9.3 | -3.1/<0.05 | -19.5±7.6 | -21.4±8.2 | -1.9/<0.01 | 0.40 |
| T1 slope (°) | -23.9±7.3 | -26.3±8.3 | -2.4/<0.05 | -21.8±7.4 | -23.6±8.1 | -1.8/<0.01 | 0.80 |
| T1s-CL (°) | 23.0±5.7 | 19.0±9.0 | -4.0/<0.05 | 7.4±6.4 | 7.6±6.9 | -0.2/0.51 | <0.05 |
| O-C2 angle (°) | 22.0±6.0 | 19.4±6.3 | -2.6/<0.01 | 13.5±8.2 | 13.3±7.0 | 0.2/0.47 | <0.05 |
| C2-7 angle (°) | 1.0±9.4 | 7.3±11.7 | 6.3/<0.05 | 14.4±9.9 | 15.7±10.1 | 1.3/0.10 | <0.05 |
| O-C7 angle (°) | 23.0±9.5 | 26.7±9.9 | 3.7/0.08 | 27.9±9.1 | 28.8±9.2 | 0.9/0.14 | 0.27 |
| Segmental slope, upper (°) | -18.4±5.8 | -16.3±6.6 | 2.1/<0.05 | -13.4±5.5 | -13.0±5.8 | 0.4/0.50 | 0.11 |
| Segmental slope, lower (°) | -17.7±8.8 | -20.8±9.3 | -3.1/<0.05 | -17.6±7.9 | -19.8±8.7 | -2.2/<0.01 | 0.66 |
| Segmental angle (°) | -0.9±7.6 | 4.5±7.6 | 5.4/<0.01 | 4.1±7.4 | 7.0±7.2 | 2.9/<0.05 | 0.20 |
| CVA (°) | 59.5±4.2 | 59.3±5.1 | -0.2/0.78 | 65.3±4.9 | 62.0±16.6 | -3.3/<0.05 | 0.31 |
| C2-7SVA (°) | 26.2±9.6 | 25.6±11.5 | -0.6/0.48 | 14.6±8.4 | 15.6±8.9 | 1.0/0.24 | 0.16 |
Values are presented as mean±standard deviation unless otherwise indicated. OP : operation, T1s-CL : T1 slope minus cervical lordosis, CVA : craniovertebral angel, C2-7SVA : C2-7 sagittal vertical axis