Table 1.
Baseline demographics. Charlson Comorbidity Index (CCI), Groningen Frailty Index (GFI), and body mass index (BMI).
| Total | No Implant Failure | Implant Failure | |
|---|---|---|---|
| Age, mean (range) | 73.7 (59–89) | 73.4 (59–88) | 72.5 (59–87) |
| Sex (%) | |||
| Female | 41 (60.3) | 29 (59.2) | 12 (63.2) |
| Male | 27 (39.7) | 20 (40.8) | 7 (36.8) |
| Comorbidity and Frailty, median (range) | |||
| CCI | 4 (2–6) | 4 (2–6) | 4 (2–6) |
| GFI | 4 (2–6) | 4 (2–6) | 4 (2–6) |
| Weight (kg), mean (SD) | 76.1 (±20.9) | 77.3 (±22.6) | 73.1 (±15.9) |
| BMI (kg/m2), mean (SD) | 25.1 (±6.9) | 27.8 (±6.6) | 27.2 (±5.8) |
| Localization instrumentation | |||
| Thoracic | 11 (16.7) | 8 (16) | 3 (18.8) |
| Thoracolumbar | 39 (59.1) | 31 (62) | 8 (50) |
| Lumbar/lumbosacral | 11 (16.7) | 8 (16) | 3 (18.8) |
| Lumbosacral | 5 (7.6) | 3 (6) | 2 (12.5) |
| Instrumented levels | |||
| 1 level | 0 | 0 | 0 |
| 2 levels | 13 (19) | 8 (16) | 5 (31.3) |
| 3 levels | 3 (4.5) | 2 (4) | 1 (6.3) |
| 4 levels | 41 (62.1) | 33 (66) | 8 (50) |
| 5 or more levels | 9 (13.6) | 7 (14) | 2 (12.5) |