| Idex | Case | VAS | ODI |
| Preoperative | 24 | 8.6 ± 1.5 | 79 ± 5 |
| Postoperative 7d | 24 | 2.7 ± 1.3a | 26 ± 4a |
| Final follow-up | 24 | 1.4 ± 1.3ab | 19 ± 6ab |
| t |
| 243.210 | 1299.987 |
| P |
| 0.00 | 0.00 |