Table 1.
Demographics
| Descriptive items | Mean ± SD or Number (%) |
|---|---|
| Sex | |
| Male | 6 (25.0%) |
| Female | 18 (75.0%) |
| Diagnosis | |
| Idiopathic | 10 (41.7%) |
| Congenital | 9 (37.5%) |
| Other | 5 (20.8%) |
| Age (implantation) (year) | 9.8 ± 2.3 |
| Age (fusion) (year) | 13.0 ± 1.5 |
| Risser sign (implantation) (0/1) | |
| 0 | 21 (87.5%) |
| 1 | 3 (12.5%) |
| Risser sign (fusion) (4/5) | |
| 4 | 4 (16.7%) |
| 5 | 20 (83.3%) |
| Treatment duration (year) | 3.2 ± 1.4 |
| No. of lengthening surgeries | 2.5 ± 1.5 |
| Implantation rod(s) | |
| Single | 19 (79.2%) |
| Dual | 5 (20.8%) |
| UIV (Growing rods) | |
| T2 and above | 16 (66.7%) |
| T3 and below | 8 (33.3%) |
| UIV (Fusion) | |
| T2 and above | 14 (58.3%) |
| T3 and below | 10 (41.7%) |
| LIV (Growing rods) | |
| L3 and above | 10 (41.7%) |
| L4 and below | 14 (58.3%) |
| LIV (Fusion) | |
| L3 and above | 17 (70.8%) |
| L4 and below | 7 (29.2%) |
| Upper instrument (Growing rods) | |
| Hook/hybrid | 16 (66.7%) |
| No hook | 8 (33.3%) |
| Upper instrument (Fusion) | |
| Hook/hybrid | 5 (20.8%) |
| No hook | 19 (79.2%) |
UIV upper instrumented vertebrae; LIV lower instrumented vertebrae