Table 3.
Comparison of the effects of three-dimensional correction
| |
Group A* |
Group B* |
||||
|---|---|---|---|---|---|---|
| |
Preoperative |
Postoperative |
Final |
Preoperative |
Postoperative |
Final |
| Follow-up | Follow-up | |||||
| Major curve Cobb angle (degree ± SD) |
58.9±9.6 |
8.8±4.7** |
9.7±5.6 |
62.3±11.9 |
13.4±7.1** |
14.5±6.5 |
| Apical translation (mm ± SD) |
55.7±13.2 |
13.8±8.4** |
15.1±7.3 |
49.3±13.9 |
12.5±10.9** |
14.8±9.2 |
| RAsag (degree ± SD) |
17.5±5.4 |
6.6±3.1** |
7.0±3.7 |
19.8±6.2 |
8.3±3.3** |
9.0±2.9 |
| RH (mm ± SD) |
28.6±9.3 |
13.1±5.2** |
14.2±6.5 |
24.1±10.9 |
11.2±7.2** |
12.1±8.4 |
| AVB-R (ratio ± SD) |
2.0±0.4 |
1.4±0.3** |
1.4±0.6 |
2.3±0.3 |
1.6±0.5** |
1.7±0.4 |
| ARSD (mm ± SD) |
48.3±15.7 |
9.4±6.1** |
10.7±8.0 |
45.7±16.3 |
11.2±7.9** |
12.0±8.6 |
| Thoracic kyphosis angle (degree ± SD) |
29.7±19.8 |
20.1±9.3** |
22.7±11.7 |
22.4±15.3 |
19.9±8.9 |
21.5±13.0 |
| Lumbar lordosis angle (degree ± SD) |
53.4±9.5 |
44.2±7.3** |
48.3±9.1 |
44.9±15.4 |
48.3±8.6 |
49.5±10.0 |
| Thoracic kyphosis angle in flat back patients (degree ± SD) | 7.1±1.4 | 11.3±2.0 | 12.0±2.6 | 5.2±3.1 | 13.4±1.5** | 13.8±2.3 |
*Group A, bilateral apical vertebral derotation by VCM; Group B, VCA.
**P<0.05 indicates statistically significant difference in the postoperative value compared with preoperative value.