| LBP group | Non-LBP group | ||
---|---|---|---|---|
 | Preoperative | Final follow-up | Preoperative | Final follow-up |
VAS score for back pain | 5.9 ± 2.4 | 3.5 ± 1.2* | 5.2 ± 2.2 | 1.7 ± 1.1*, ** |
VAS score for leg pain | 5.1 ± 1.4 | 2.1 ± 1.5* | 5.3 ± 1.6 | 1.5 ± 1.1* |
ODI score | 25.5 ± 7.4 | 12.0 ± 4.7* | 25.1 ± 6.7 | 11.5 ± 3.3* |