Fusion status success.
| Surgical Approach | Successful Fusion | ||
| Bridging Bone n (%) | QMA n (%) | Bridging Bone + QMAa
n (%) | |
| 12 Mo (n = 205) | |||
| Overall fusion success | 202 (98.5) | 189 (92.2) | 187 (91.2) |
| By approach | |||
| Anterior (n = 53) | 52 (98.1) | 45 (84.9) | 44 (83.0) |
| Lateral (n = 56) | 56 (100.0) | 53 (94.6) | 53 (94.6) |
| Posterior (n = 96) | 94 (97.9) | 91 (94.7) | 90 (93.8) |
| 24 Mo (n = 184) | |||
| Overall fusion success | 182 (98.9) | 170 (92.4) | 169 (91.8) |
| By approach | |||
| Anterior (n = 48) | 47 (97.9) | 42 (87.5) | 41 (85.4) |
| Lateral (n = 51) | 51 (100.0) | 48 (94.1) | 49 (96.1) |
| Posterior (n = 85) | 84 (98.8) | 80 (94.1) | 79 (92.9) |
Abbreviation: QMA, quantitative motion analysis.
Note: Numbers reported for bridging bone, QMA, and bridging bone plus QMA are only for patients with successful fusion.
↵a No statistically significant difference was observed between surgical approaches at 12 and 24 months.