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Overall results of functional evaluations
| ODI (n = 50) | |
| Pre-operative | 64.3 ± 20.0 |
| Final follow-up | 16.7 ± 20.0 |
| Improvement | 47.6 ± 27.5 |
| Significant improvement (n = 43) | 86.0% |
| JOA score (n = 50) | |
| Pre-operative | 9.4 ± 6.1 |
| Final follow-up | 24.2 ± 6.0 |
| Improvement rate (%) | 73.9 ± 30.7 |
| Poor (n = 5) | 10% |
| Fair (n = 5) | 10% |
| Good (n = 9) | 18% |
| Excellent (n = 31) | 62% |
