Table 5 Comparison of radiological variables between the ASD Group and N-ASD Group
Variable | ASD (n = 34) | N-ASD (n = 684) | p value |
|---|---|---|---|
Preoperative adjacent disc height (mm) | 8.1 ± 1.2 | 11.9 ± 1.6 | 0.043 |
Preoperative adjacent disc degeneration (Pfirrmann classification) | – | – | – |
I | 0 | 78 | – |
II | 1 | 467 | – |
III | 10 | 128 | 0.015 |
IV | 18 | 11 | – |
V | 5 | 0 | – |