Table 1.
Selected subject demographics and preoperative clinical and radiographic parameters.*
| Subject ID | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Demographics and pre-operative clinical parameters | ||||||
| Gender | F | F | M | M | F | M |
| Age (years) at surgery | 13.0 | 12.6 | 11.7 | 10.6 | 10.1 | 14.9 |
| Bone age at surgery (years) Site / DMC | 12 / 11 | 12 / 11 | 13.5 / 12 | 10 / 10 | 11.5 / 12 | 13.5 / 13 |
| Height (cm) | 151 | 141 | 174 | 134 | 139 | 164 |
| Weight (kg) | 40.2 | 33.9 | 54.0 | 26.5 | 52.7 | 50.9 |
| BMI | 17.7 | 17.0 | 17.9 | 14.7 | 27.4 | 19 |
| BMI (%-ile age, gender) | 35 | 28 | 55 | 8 | 98 | 39 |
| Menarchal status | Pre | Pre | NA | NA | Pre | NA |
| Risser grade | 0 | 0 | 0 | 0 | 0 | 0 |
| Triradiate status | Open | Open | Open | Open | Open | Open |
| Height velocity (cm/year), based on immediately pre-op to 6 month post-op visit | 8.8 | 5.8 | 4.8 | 8.0 | 7.8 | 10.8 |
| Clinical outcome score (SRS-22r) | 4.4 | 4.5 | 4.7 | 3.5 | 4.6 | 4.5 |
| Back pain, VAS (cm) | 0.8 | 4.3 | 0.2 | 0.2 | 1.5 | 0.5 |
| Preoperative curve parameters | ||||||
| Curve type (Lenke) | 1A | 1A | 1A | 1A | 1A | 1B |
| Major thoracic (MT) curvature (deg) | 35 | 30.5 | 35 | 36 | 31 | 38.5 |
| Levels, MT | T6 - L1 | T6 - T12 | T5 - T10, T6-T11 | T5 - T11, T6-T11 | T5 - T10, T5-T11 | T7 - T12 |
| Bend angle, MT, (deg), R/L | 15/38 | 2/25 | 18.5/40 | 4/37 | 10/29 | 12/36 |
| Flexibility (%) = 100 x [1-CobbRtBend/CobbStanding preop] | 57 | 93 | 47 | 89 | 68 | 69 |
| Thoracolumbar/lumbar (TL/L) curvature (deg) | 24 | 26 | 18.5 | 27.5 | 18.5 | 28 |
| Levels, TL/L | L1-L4, L1-L5 | T12-L4, L1-L4 | T10-L4, T11-L4 | T11-L4 | T10-L3, T11-L4 | T12-L4 |
| Proximal thoracic (PT) curvature (deg) | 14 | 12 | 25.5 | 17 | 19 | 22 |
| Levels, PT | T1-T5, T2-T6 | T2-T6 | T1-T5, T2-T5 | T2-T5, T2-T6 | T1-T5, T2-T5 | T3-T6, T3-T7 |
| Thoracic kyphosis (TK)(deg) | 33.5 | 27.7 | 10.5 | 22.5 | 25.5 | 18.0 |
| Levels, TK | T3-T12 | T3-T12, T1-T12, T3-L1 | T4-T12, T5-T12 | T4-T12, T3-T12 | T3-T12, T2-T12 | T3-T12, T2-T12 |
| Apical trunk rotation (deg) | 10 | 13 | 12 | 12 | 9 | 8 |
| Coronal balance (mm) | −9.5 | −4.5 | −9.0 | −3.0 | −13.0 | 21.5 |
BMI, body mass index; DMC, data monitoring committee; NA: not applicable; TK, thoracic kyphosis; VAS, visual analog scale.
*
Reprinted, in part, from Reference [32], with permission from Elsevier