Index | Preoperative | Last follow-up | Statistic Value | P-value |
---|---|---|---|---|
DH(\(\bar{x} \pm s\), mm) | 9.39 ± 2.04 | 8.81 ± 2.12 | t=3.207 | 0.002 |
the adjacent upper segment DH(\(\bar{x} \pm s\), mm) | 9.60 ± 1.81 | 9.65 ± 1.76 | t=-0.371 | 0.712 |
FH(\(\bar{x} \pm s\), mm) | 17.57 ± 2.19 | 17.07 ± 2.52 | t=2.003 | 0.049 |
the adjacent upper segment FH(\(\bar{x} \pm s\), mm) | 18.84 ± 2.98 | 18.58 ± 2.50 | t=1.046 | 0.299 |
LLA(\(\bar{x} \pm s\), °) | 40.19 ± 14.68 | 39.89 ± 13.59 | t=0.322 | 0.749 |
Pfirrmann grading(example, 1/2/3/4/5) | 26/24/6/5/5 | 15/23/13/9/6 | χ2=6.785 | 0.148 |
the adjacent upper segment Pfirrmann grading(example, 1/2/3/4/5) | 28/23/7/5/3 | 16/21/11/10/8 | χ2=8.192 | 0.085 |
intervertebral disc angle(\(\bar{x} \pm s\), °) | 9.71 ± 2.03 | 9.85 ± 1.89 | t=-0.571 | 0.570 |
the adjacent upper segment intervertebral disc angle(\(\bar{x} \pm s\), °) | 10.08 ± 2.27 | 10.23 ± 2.05 | t=-0.559 | 0.578 |
anterior-posterior translation distance(\(\bar{x} \pm s\), mm) | 1.78 ± 0.25 | 1.76 ± 0.29 | t=0.697 | 0.488 |
the adjacent upper segment anterior-posterior translation distance(\(\bar{x} \pm s\), mm) | 1.79 ± 0.25 | 1.79 ± 0.22 | t=-0.155 | 0.877 |