Table 2 Comparison of ASD diagnosis parameters between the two groups postoperatively and at the last follow-up
Non-ASD | ASD | p | |
|---|---|---|---|
Postoperative disk height | 8.6 ± 1.1 | 8.7 ± 1.2 | 0.872 |
Follow-up disk height | 7.3 ± 1.2 | 5.9 ± 1.5 | < 0.001 |
Postoperative slippage | − 2.4 ± 1.2 | − 2.1 ± 1.1 | 0.180 |
Follow-up slippage | − 1.8 ± 1.1 | − 3.0 ± 1.8 | < 0.001 |
Postoperative posterior opening | 2.9 ± 0.7 | 2.9 ± 0.7 | 0.896 |
Follow-up posterior opening | 3.1 ± 0.7 | 4.3 ± 0.9 | < 0.001 |