Table 2 Imaging outcomes of patients in the two groups
Variable | Spread group (n = 48) | None-spread group (n = 42) | P Value |
|---|---|---|---|
Height of intervertebral space, mean ± SD, mm | |||
Pre. | 4.04 ± 1.41 | 3.94 ± 1.52 | .754 |
Post. 1w | 7.59 ± 1.32 | 6.53 ± 1.20 | < 0.01 |
Post. 3 m | 6.78 ± 1.28 | 5.92 ± 1.21 | .002 |
Post. 6 m | 6.06 ± 1.34 | 5.59 ± 1.34 | .094 |
Post. 12 m | 5.65 ± 1.18 | 5.34 ± 1.39 | .254 |
Post. 24 m | 5.26 ± 1.25 | 5.16 ± 1.34 | .724 |
Cage subsidence, mean ± SD, mm | |||
Post. 3 m | 0.82 ± 0.68 | 0.58 ± 0.81 | .127 |
Post. 6 m | 0.64 ± 0.77 | 0.34 ± 0.46 | .026 |
Post. 12 m | 0.48 ± 0.43 | 0.25 ± 0.28 | .005 |
Post. 24 m | 0.45 ± 0.47 | 0.17 ± 0.32 | .002 |
C2–C7 Cobb angle, mean ± SD, ° | |||
Pre. | 6.02 ± 9.18 | 6.57 ± 9.25 | .778 |
Post. 1w | 15.29 ± 8.84 | 10.28 ± 6.33 | .004 |
Post. 24 m | 7.29 ± 8.66 | 6.24 ± 6.63 | .523 |
Average score of unoperated intervertebral disc degeneration Pfirrmann score | |||
Pre. | 2.58 ± 0.96 | 2.30 ± 0.92 | 0.174 |
Post. 24 m | 3.08 ± 0.84 | 2.38 ± 0.49 | 0.000 |