Table 1.
Demographic data
| Group A* | Group B* | |
|---|---|---|
| No. patients |
24 |
24 |
| Age at surgery (years ± SD) |
14.3±2.4 |
15.1 ±3.2 |
| Male/female |
8/16 |
9/15 |
| Risser sign at surgery(N ± SD) |
3.5 ±1.7 |
3.6 ±1.3 |
| Flexibility of major curve (% ± SD) |
37.2±9.7 |
38.8±10.3 |
| Lenke IS lumbar spine modifier, N (%) |
|
|
| A |
14 (58) |
15(62) |
| B |
6 (25) |
5 (21) |
| C |
4 (17) |
4 (17) |
| Kyphosis (T5-T12 Cobb angle), N (%) |
|
|
| Hypokyphosis (inferior to 10°) |
4 (17) |
4(17) |
| Normokyphosis (between 10° and 40°) |
16 (66) |
17(70) |
| Hyperkyphosis (superior to 40°) | 4 (17) | 3(13) |
*Group A, bilateral apical vertebral derotation by VCM; Group B, VCA.