Radiographic fusion outcomes
PSEUDOARTHROSIS
Fusion success was confirmed in 95.3% of subjects (n = 82/86). There were 4 subjects (4.7%) with evidence of pseudoarthrosis, with ≥ 3° of angular motion on QMA, although bridging bone was present. No revisions were reported for these 4 subjects at the time of this report (Fig. 
Fusion Success at 24 Months. Subjects showed high rates of fusion success across all groups with a range from 95.3 − 100.0%.
Spinal Fusion Success. 24-Month postoperative imaging demonstrating successful lumbar fusion. 