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Clinical results using ODI and VAS before surgery and at FU
| Group | Time | ODI mean (SD) | VAS mean (SD) |
|---|---|---|---|
| 1 + 2 | Before surgery | 56.6 (18.8) | 8.6 (1.3) |
| 1 + 2 | At FU | 30.8 (20.6) | 4.9 (3.0) |
| 1 | Before surgery | 57.8 (19.6) | 8.5 (1.3) |
| 1 | At FU | 34.8 (20.6) | 5.4 (2.9) |
| 2 | Before surgery | 54.4 (18) | 8.8 (1.1) |
| 2 | At FU | 22.6 (18.8) | 3.9 (2.9) |
