Table 1.
Preoperative and postoperative parameters of the patients
| Parameters | Preoperative | Postoperative | df | 95% CI | p |
|---|---|---|---|---|---|
| GK (°) | 102.9° ± 19.17° | 34.2° ± 19.35 | 10 | 55.6–81.7 | < 0.000 |
| LL (°) | -29.2 ± 26.50 | 39.9 ± 20.78 | 10 | 56.1–82.1 | < 0.000 |
| TK (°) | 51.7 ± 21.85 | 49.1 ± 23.28 | 10 | -1.6–6.8 | 0.204 |
| SVA (cm) | 350.0 ± 123.72 | 123.2 ± 57.57 | 10 | 156.2–297.3 | < 0.000 |
| a (cm) | 17.5 ± 2.60 | 17.5 ± 2.50 | 10 | -0.4–0.3 | 0.911 |
| b (cm) | 6.1 ± 1.16 | 6.4 ± 1.07 | 10 | -0.6–0.1 | 0.124 |
| c (cm) | 13.5 ± 3.03 | 12.6 ± 2.55 | 10 | -0.02–1.7 | 0.056 |
| d (cm) | 12.1 ± 7.01 | 26.7 ± 4.84 | 10 | 12.0–17.2 | < 0.000 |
| XT (cm) | 14.0 ± 2.94 | 13.3 ± 2.90 | 10 | -0.2–1.6 | 0.099 |
| TAs (cm) | 3.8 ± 1.31 | 3.8 ± 1.43 | 10 | -0.2–0.3 | 0.641 |
| SAi (cm) | 8.2 ± 1.66 | 8.3 ± 1.81 | 10 | -0.4–0.1 | 0.232 |
| PS (cm) | 11.4 ± 0.87 | 11.3 ± 0.82 | 10 | -0.3–0.4 | 0.787 |
| a-AMSP (cm2) | 152.9 ± 42.01 | 208.1 ± 36.56 | 10 | 16.3–94.1 | 0.010† |
| β (°) | 128.4 ± 24.09 | ||||
| γ (°) | 63.1 ± 17.42 |
GK Global kyphosis, LL Lumbar lordosis, TK Thoracic kyphosis, SVA Sagittal vertical axis, a is the distance between the superior edge of the pubis and the inferior PSO’s apex, b is the distance between the inferior PSO’s apex and the superior PSO’s apex, c is the distance between the xiphoid process and the superior PSO’s apex, d is the distance between the xiphoid process and the superior edge of the pubis, XT is the distance between the xiphoid process and the anterosuperior edge of T12, TAs is the distance between the anterosuperior edge of T12 and the superior PSO’s apex; SAi is the distance between the anterosuperior corner of the sacrum and the inferior PSO’s apex; PS is the distance between the superior edge of the pubis and the anterosuperior corner of the sacrum; a-AMSP is the acreage of the abdominal median sagittal plane; β is the angle of the line between the connections of the superior edge of the pubis and the inferior PSO’s apex, and the inferior PSO’s apex and the superior PSO’s apex; γ is the angle of the line between the inferior PSO’s apex and the superior PSO’s apex, and the superior PSO’s apex and the xiphoid process; df degree of freedom, 95% CI 95% confdence interval; †p < 0.05