Table 2 Comparison of radiological parameters of the three groups.
Variables | Pelvic fixation | Fixed to S1 | Fixed to L5 | P-value |
|---|---|---|---|---|
(Group A) (N = 16) | (Group B) (N = 33) | (Group C) (N = 28) | ||
Cobb’s angle (°) | ||||
Preoperative | 92.5 ± 37.5 | 92.4 ± 23.3 | 95.0 ± 26.3 | 0.930 |
Postoperative | 40.2 ± 29.1 | 40.5 ± 25.2 | 40.4 ± 19.1 | 0.999 |
∆ Cobb’s angle | 52.4 ± 17.8 | 51.9 ± 19.6 | 54.6 ± 24.6 | 0.883 |
2-year follow-up | 44.7 ± 34.3 | 44.1 ± 24.7 | 40.6 ± 23.8 | 0.86 |
Correction rate (%) | 60.0 ± 18.5 | 58.0 ± 22.0 | 56.7 ± 18.3 | 0.871 |
Loss of correction | 3.8 ± 12.2 | 5.4 ± 11.3 | 0.3 ± 15.9 | 0.413 |
Pelvic tilt angle (°) | ||||
Preoperative | 23.4 ± 12.1 | 24.7 ± 8.7 | 30.8 ± 16.2 | 0.094 |
Postoperative | 9.8 ± 10.5 | 12.7 ± 8.4 | 13.0 ± 10.1 | 0.514 |
∆ Pelvic tilt angle | 13.6 ± 9.3 | 12.0 ± 11.4 | 17.8 ± 11.9 | 0.137 |
2-year follow-up | 10.9 ± 12.3 | 12.0 ± 8.0 | 15.9 ± 13.5 | 0.321 |
Correction rate (%) | 61.3 ± 35.4 | 42.8 ± 40.2 | 57.5 ± 25.9 | 0.131 |
Loss of correction | 0.6 ± 7.9 | 0.8 ± 6.2 | 2.3 ± 12.5 | 0.806 |
L4/pelvis angle (°) | ||||
Preoperative | 13.2 ± 10.7 | 12.8 ± 8.8 | 16.1 ± 9.4 | 0.358 |
Postoperative | 9.1 ± 6.3 | 6.6 ± 5.3 | 9.2 ± 6.2 | 0.177 |
∆ L4/pelvis angle | 4.1 ± 9.0 | 6.1 ± 7.0 | 7.0 ± 8.3 | 0.518 |
2-year follow-up | 9.0 ± 6.7 | 6.4 ± 4.7 | 9.4 ± 6.7 | 0.182 |
L5/pelvis angle (°) | ||||
Preoperative | 15.1 ± 9.6 | 11.6 ± 6.6 | 14.7 ± 7.8 | 0.196 |
Postoperative | 8.1 ± 6.2 | 6.9 ± 4.7 | 8.8 ± 5.5 | 0.376 |
∆ L5/pelvis angle | 7.1 ± 8.0 | 4.3 ± 5.9 | 6.3 ± 8.5 | 0.382 |
2-year follow-up | 8.1 ± 6.2 | 6.2 ± 4.7 | 8.4 ± 7.5 | 0.432 |
CSVL (mm) | ||||
Preoperative | 64.9 ± 34.7 | 56.9 ± 43.5 | 42.1 ± 29.6 | 0.118 |
Postoperative | 35.3 ± 29.8 | 32.0 ± 24.9 | 38.2 ± 37.7 | 0.739 |
∆ CSVL | 29.6 ± 36.8 | 25.0 ± 47.7 | 4.0 ± 36.0 | 0.076 |
SVA (mm) | ||||
Preoperative | 74.6 ± 65.4 | 64.9 ± 58.7 | 69.5 ± 54.2 | 0.858 |
Postoperative | 25.5 ± 38.3 | 43.3 ± 36.0 | 41.4 ± 35.5 | 0.255 |
∆ SVA | 49.1 ± 67.6 | 21.6 ± 69.0 | 28.2 ± 65.0 | 0.408 |
