Table 2.
Comparison of radiographic data
| Hybrid (n = 15) | Pedicle screw (n = 17) | Significance | |
|---|---|---|---|
| Major curve | |||
| Preoperative (º) | 109 ± 11 | 100 ± 8 | 0.015 |
| Major curve on traction film (º) | 76 ± 15 | 67 ± 15 | 0.13 |
| Correction on traction (%) | 29 ± 12 | 33 ± 14 | 0.43 |
| Immediate postoperative (º) | 48 ± 14 | 32 ± 11 | 0.0010 |
| Correction (%) | 56 ± 12 | 68 ± 10 | 0.0044 |
| Postoperative 6 months (º) | 43 ± 13 | 27 ± 11 | <0.001 |
| Correction (%) | 61 ± 11 | 73 ± 9 | 0.0017 |
| Postoperative 2 years (º) | 45 ± 16 | 27 ± 8 | <0.001 |
| Correction (%) | 59 ± 14 | 73 ± 7 | 0.0023 |
| T5–T12 kyphosis | |||
| Preoperative (º) | 46 ± 16 | 39 ± 33 | 0.60 |
| Immediate postoperative (º) | 29 ± 15 | 29 ± 9.4 | 0.90 |
| Postoperative 2 years (º) | 33 ± 12 | 23 ± 9.6 | 0.034 |
| T12–S1 lordosis | |||
| Preoperative (º) | 63 ± 17 | 57 ± 15 | 0.54 |
| Immediate postoperative (º) | 46 ± 12 | 59 ± 9 | 0.013 |
| Postoperative 2 years (º) | 49 ± 14 | 56 ± 9 | 0.19 |
| Coronal balance (mm) | |||
| Preoperative | 44 ± 43 | 57 ± 26 | 0.41 |
| Postoperative 2 years (º) | 23 ± 19 | 23 ± 21 | 0.46 |
| Pelvic obliquity (º) | |||
| Preoperative | 22 ± 16 | 23 ± 12 | 0.95 |
| Postoperative 2 years | 7 ± 6 | 6 ± 7 | 0.70 |
Values are expressed as mean ± standard deviation