Table 1.
Listing of patient demographic and treatment information.
| Characteristic | Statistic n = 30 |
|---|---|
| Mean age in years (stdev) (range) | 62.7 (10.5) (30–81) |
| Female (%) | 20 (66.7) |
| Mean body mass index (BMI), (stdev) (range) | 26.7 (5.4) (17.6–37.9) |
| Comorbidities | |
| Comorbidity type | |
| Tobacco use (%) | 6 (20) |
| Diabetes (%) | 4 (13) |
| Any prior lumbar spine surgery (%) | 6 (20) |
| Lami/MLD (%) | 4 (67) |
| Fusion (%) | 2 (33) |
| Primary diagnosis | n = 29 (1 missing) |
| Degenerative disc disease (%) | 12 (41) |
| Herniated nucleus pulposus (%) | 1 (3) |
| Spondylolisthesis (%) | 9 (31) |
| Scoliosis (%) | 7 (24) |
| Levels treated (mean per patient) (range) | 43 (1.4) (1–3) |
| T6-7 (% of levels) (% of patients) | 1 (2) (3) |
| L1-L2 (% of levels) (% of patients) | 1 (2) (3) |
| L2-L3 (% of levels) (% of patients) | 6 (14) (20) |
| L3-L4 (% of levels) (% of patients) | 17 (40) (57) |
| L4-L5 (% of levels) (% of patients) | 17 (40) (57) |
| Biologics used | |
| rhBMP-2 (%) | 30 (100) |
| Fixation type (%) | |
| Interspinous plating (%) | 2 (7) |
| Transpedicular fixation (%) | 13 (40) |
| Unilateral (%) | 2 (15) |
| Bilateral (%) | 11 (85) |
| Standalone (%) | 15 (50) |
| Staged fixation? | |
| Yes (%) | 14 (47) |
| No (%) | 16 (53) |
n: number of patients; stdev: standard deviation; Lami: laminectomy; MLD: microlumbar discectomy.