Variables | Group A (n = 60) | Group B (n = 59) | P value |
---|---|---|---|
Fusion rate | |||
 3 months follow-up |  |  | 0.03 |
 No fusion | 53 | 39 |  |
 One-level fusion | 4 | 9 |  |
 Two-level fusion | 3 | 11 |  |
 6 months follow-up |  |  | 0.01 |
 No fusion | 37 | 21 |  |
 One-level fusion | 11 | 15 |  |
 Two-level fusion | 12 | 23 |  |
 1 year follow-up |  |  | 0.048 |
 No fusion | 15 | 6 |  |
 One-level fusion | 20 | 17 |  |
 Two-level fusion | 25 | 36 |  |
 Final follow-up |  |  | 0.46 |
 No fusion | 3 | 1 |  |
 One-level fusion | 5 | 3 |  |
 Two-level fusion | 52 | 55 |  |
FSH (mm) | |||
 Preoperative | 49.1 ± 4.5 | 48.9 ± 4.2 | 0.80 |
 Postoperative | 53.4 ± 4.9 | 52.7 ± 4.0 | 0.40 |
 1 year follow-up | 51.2 ± 4.1 | 51.0 ± 3.7 | 0.78 |
 Final follow-up | 50.5 ± 3.8 | 50.4 ± 3.6 | 0.88 |
Subsidence (mm) | 2.9 ± 1.4 | 2.3 ± 0.8 | 0.01 |
Subsidence rate | 17/60 | 10/59 | 0.14 |
C2-7 lordosis (°) | |||
 Preoperative | 12.9 ± 10.8 | 11.0 ± 12.4 | 0.37 |
 Postoperative | 19.1 ± 11.5 | 18.4 ± 11.9 | 0.75 |
 1 year follow-up | 17.3 ± 13.4 | 16.9 ± 12.7 | 0.87 |
 Final follow-up | 15.4 ± 10.8 | 17.2 ± 12.4 | 0.40 |
SSA (°) | |||
 Preoperative | 4.2 ± 5.4 | 3.9 ± 6.1 | 0.78 |
 Postoperative | 10.7 ± 6.1 | 9.3 ± 7.0 | 0.26 |
 1 year follow-up | 9.2 ± 5.3 | 8.6 ± 6.5 | 0.58 |
 Final follow-up | 8.5 ± 4.9 | 8.2 ± 5.7 | 0.76 |