Table 3 Preoperative and 3, 6, 12, and 24 months grade I score percentage of the two bone graft filling approaches
Grade I (%) | Control group | MIS device group |
|---|---|---|
Pre-op | 0.0 | 0.0 |
Post-op 3 M | 3.6 | 39.5 |
Post-op 6 M | 12.5 | 63.2 |
Post-op 12 M | 37.5 | 88.2 |
Post-op 24 M | 75.0 | 96.1 |