| NF: Patients with No History of Spinal Fusion or Confounding Lumbar Pathology | PF: Patients with History of Prior Lumbar Spinal Fusion | LP: Patients with Concomitant Lumbar Pathology Treated Non-Surgically | |
|---|---|---|---|
| N | 18 | 15 | 7 |
| Age (years) | 49 (±12) | 58 (±11) | 58 (±17) |
| Sex | 12 (67%)female | 11 (73%) female | 3 (43%) female |
| 6 (33%) male | 4 (27%) male | 4 (57%) male | |
| OR time (stdev) | 60 (±19) min | 64 (±19) min | 64 (±19) min |