Cobb angle change over time.
| Patient No. | Treatment Type | Initial (°) | 1 y (°) | P Value | Change (°) |
| 4 | Short segment | −11.9 ± 9.1 | −18.0 ± 12.2 | 0.46 | −6.1 |
| 28 | Multilevel | −15.5 ± 9.5 | −12.8 ± 8.6 | 0.28 | 2.7 |
| 12 | Corpectomy | −15.1 ± 8.77 | −8.3 ± 10.4 | 0.098 | 7.6 |
| 5 | Delayed | −14.3 ± 4.9 | −22.4 ± 13. 7 | 0.27 | −8.1 |
| 117 | Nonsurgical | −11.1 ± 7.4 | −17.4 ± 9.2 | <0.001 | −6.4 |