Table 1.
Patient characteristics. Patient data is provided for laminectomy and posterolateral fusion for single level lumbar stenosis and degenerative spondylolisthesis. PS – Pedicle screw; CBT – Cortical bone trajectory; BMI – Body mass index; HCC - Hierarchical Condition Category; ASA – American Society of Anesthesiologists; SD – Standard deviation.
| Patient Characteristics | CBT Instrumentation | PS Instrumentation | P-value |
|---|---|---|---|
| N | 41 | 50 | – |
| Males (%) | 19 (46.3%) | 14 (28.0%) | 0.070 |
| Age (mean ± SD) | 67.12 ± 10.04 | 66.34 ± 10.11 | 0.714 |
| BMI (mean ± SD) | 32.28 ± 6.21 | 30.34 ± 6.21 | 0.141 |
| HCC (mean ± SD) | 0.74 ± 0.55 | 0.65 ± 0.41 | 0.402 |
| ASA 1 (%) | 0 (0%) | 0 (0%) | – |
| ASA 2 (%) | 19 (46.3%) | 28 (56.0%) | 0.359 |
| ASA 3 (%) | 20 (48.78%) | 21 (42%) | 0.380 |
| ASA 4 (%) | 1 (2.44%) | 1 (2%) | 0.887 |
| Follow up (mean ± SD) | 190.32 ± 114.98 | 244.76 ± 200.77 | 0.127 |