Primary outcome of change from baseline to follow-up in the 3 degree of union groups
| Outcome Measure | Total (n = 101) | Nonunion (n = 10) | Partial Union (n = 15) | Complete Union (n = 76) | P |
| ODI, mean (SD) | −20.1 (17.0) (n = 100) | −25.6 (15.9) (n = 10) | −17.3 (20.7) (n = 14) | −19.9 (16.5) (n = 76) | 0.49 |
| Success | 74% (n = 100) | 90% (n = 10) | 64.3% (n = 14) | 73.7% (n = 76) | 0.39 |
Abbreviation: ODI, Oswestry Disability Index.
Note: Success ≥30% improvement in ODI.