Complications and patient-reported outcomes.
| Variable | Skeletally Immature (Risser 0 to 2) | Skeletally Mature (Risser 3 to 5) | P Value |
| Revisions, n (%) | 0 (0%) | 0 (0%) | |
| Screw plowing, n (%) | 1 (6%) | 0 (0%) | 0.27 |
| Screw loosening, n (%) | 0 (%) | 0 (%) | |
| Cord breakage | |||
| Number of breakages, n (%) | 2 (13%) | 2 (12%) | 0.94 |
| Survival time of breakages, mo, events | (24, 39) | (12, 42) | |
| Survival time all, mo, median (range) | 24 (24–39) | 25 (12–42) | 0.32 |
| Correction complications | |||
| Overcorrection, n (%) | 2 (13%) | 0 (0%) | 0.13 |
| Overcorrection degree, median (range) | 9 (2–16) | 0 | |
| Loss of correction, n (%) | 1 (6%) | 4 (23%) | 0.17 |
| Loss of correction degree, median (range) | 8 (8) | 7.5 (6–11) | 0.12 |
| 2-y follow-up Scoliosis Research Society Questionnaire Scores, median (range) | |||
| Activity | 4.1 (3.6–4.4) | 4.4 (3–5) | 0.24 |
| Pain | 4.5 (3.7–5) | 4.7 (3.3–5) | 0.26 |
| Image | 4.3 (3.4–4.9) | 4.4 (3.1–5) | 0.44 |
| Mental | 4.4 (3.2–5) | 4.7 (3.4–5) | 0.46 |
| Satisfaction | 4.5 (3–5) | 4.7 (3–5) | 0.57 |
| Average | 4.3 (3.6–4.8) | 4.5 (3.3–5) | 0.30 |