Kyphotic angle change over time.
| Patient No. | Treatment Type | Initial (°) | 1 y (°) | P Value | Change (°) |
| 4 | Short segment | 15.8 ± 10.9 | 18.2 ± 6.9 | 0.73 | −2.4 |
| 28 | Multilevel | 14.9 ± 8.3 | 11.6 ± 7.9 | 0.13 | 3.3 |
| 12 | Corpectomy | 18.5 ± 7.4 | 4.4 ± 8.5 | <0.001 | 14.1 |
| 5 | Delayed | 12.8 ± 7.6 | 21.2 ± 11.1 | 0.21 | −8.4 |
| 117 | Nonsurgical | 11.6 ± 7.2 | 17.7 ± 7.3 | <0.001 | −6.1 |