Demographic data of patients (N = 130).
| Demographic | Value |
| Sex, n, men/women | 54/76 |
| Age, y, mean ± SD (range) | 72 ± 9.2 (44–90) |
| Pathologies, n | |
| Degenerative lumbar scoliosis | 46 |
| Degenerative spondylolisthesis | 42 |
| LCS | 40 |
| LCS + VFx | 2 |
| No. of fused levels, mean ± SD (range) | 1.7 ± 0.8 (1–3) |
| Disk level, n | |
| L2/3 | 35 |
| L3/4 | 72 |
| L4/5 | 106 |
| L5/6 | 2 |
| Cage (Clydesdale PTC; 6° lordotic) | |
| Size, mm, mean ± SD (range) | 49.8 ± 3.5 (45–55) |
| Height, mm, mean ± SD (range) | 10.3 ± 1.2 (8–14) |
| Bone graft materials, n, cages/cases | |
| Decalcified bone matrix (Grafton︎) | 198/120 |
| Beta-tricalcium phosphate (AFFINOS︎) | 17/10 |
Abbreviations: LCS, lumbar canal stenosis; VFx, vertbral fracture.