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Comparison of JOA score before and after the operation.
| Subgroup analysis | Case (n) | Preoperative | 3 months after surgery | 6 months after surgery |
|---|---|---|---|---|
| Anterior group | 34 | 8.25 ± 0.75 | 16.25 ± 0.75 | 14.65 ± 0.46 |
| Posterior group | 22 | 8.25 ± 0.88 | 13.55 ± 0.38 | 12.46 ± 0.55 |
| t | 0.852 | 12.215 | 9.045 | |
| p | 0.082 | 0.001 | 0.001 |
