Table 2 Univariate analysis comparing radiographic variables between patients with and without adjacent segment disease
Characteristic | ASDis (n = 62) | N-ASD (n = 62) | χ2/t | p |
|---|---|---|---|---|
LL (°) | ||||
Preoperative | 37.94 ± 13.11 | 44.00 ± 8.74 | −3.02 | 0.003 |
Postoperative | 38.14 ± 13.81 | 44.98 ± 9.41 | −3.23 | 0.002 |
SS (°) | ||||
Preoperative | 36.37 ± 10.35 | 34.18 ± 7.99 | 1.32 | 0.189 |
Postoperative | 33.41 ± 10.13 | 31.81 ± 9.10 | 0.923 | 0.358 |
PT (°) | ||||
Preoperative | 18.15 ± 11.64 | 17.19 ± 10.37 | 0.485 | 0.629 |
Postoperative | 21.12 ± 10.32 | 19.46 ± 9.26 | 0.941 | 0.348 |
PI (°) | 54.52 ± 10.45 | 51.37 ± 12.06 | 1.56 | 0.122 |
PI-LL (°) | ||||
Preoperative | 16.58 ± 13.22 | 7.37 ± 11.06 | 4.21 | < 0.001 |
Postoperative | 16.38 ± 13.10 | 6.28 ± 14.19 | 4.12 | < 0.001 |
△LL (°) | 12.18 ± 6.79 | 7.74 ± 5.06 | 4.13 | < 0.001 |
Preexisting spinal stenosis at adjacent segment | ||||
Yes | 32 (51.6%) | 24 (38.7%) | 2.08 | 0.149 |
No | 30 (48.4%) | 38 (61.3%) | ||
Preexisting disc degeneration at adjacent segment | ||||
Yes | 24 (38.7%) | 16 (25.8%) | 2.36 | 0.124 |
No | 38 (61.3%) | 46 (74.2%) | ||