Table 2.
Correction of the coronal plane and sagittal plane
| Preoperative | Postoperative | Final follow-up | |||||
|---|---|---|---|---|---|---|---|
| Valuea | Valuea | Improvement (%) | P value | Valuea | Improvement (%) | P value | |
| The coronal plane | |||||||
| Segmental curve (°) | 63.0 ± 16.7 (43–90) | 12.8 ± 8.1 (3–26) | 80.6 | <0.001 | 13.1 ± 8.7 (5–29) | 80.4 | <0.001 |
| Main curve (°) | 65.3 ± 16.2 (45–92) | 13.4 ± 8.5 (3–27) | 80.5 | <0.001 | 13.8 ± 9.1 (5–30) | 80.0 | <0.001 |
| Compensatory cranial curve (°) | 25.8 ± 16.6 (5–53) | 10.6 ± 11.7 (0–33) | 70.8 | <0.001 | 11.7 ± 12.3 (0–34) | 65.9 | <0.001 |
| Compensatory caudal curve (°) | 32.4 ± 11.9 (17–57) | 6.4 ± 6.0 (0–15) | 82.7 | <0.001 | 7.1 ± 7.2 (0–20) | 81.4 | <0.001 |
| Coronal balance (cm) | −1.0 ± 1.7 (−3.5 to 3) | 0.0 ± 1.0 (−1.0 to 1.9) | 0.064 | 0.0 ± 0.9 (−1.0 to 1.5) | 0.060 | ||
| The sagittal plane | |||||||
| Segmental kyphosis (°) | 41.3 ± 24.5 (12–76) | 16.8 ± 16.5 (−10 to 45) | <0.001 | 17.0 ± 16.8 (−12 to 45) | <0.001 | ||
| Thoracic kyphosis (°) | 34.2 ± 15.6 (15–61) | 28.6 ± 7.7 (16–42) | 0.199 | 30.7 ± 8.6 (18–43) | 0.404 | ||
| Lumbar lordosis (°) | −48.8 ± 24.0 (−71 to −5) | −44.2 ± 12.5 (−60 to −25) | 0.328 | −46.9 ± 13.1 (−67 to −29) | 0.685 | ||
| Sagittal balance (cm) | 0.9 ± 1.9 (−3.2 to 3) | 0.6 ± 1.4 (−2.8 to 2.7) | 0.531 | 0.6 ± 1.8 (−3.0 to 3.5) | 0.517 | ||
aThe values are given as the mean ± standard deviation, with the range in parentheses
bAccording to the paired Student’s t test, with the level of significance set at P < 0.05