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Baseline characteristics
| Characteristics | Screw, n = 172 | Blade, n = 163 |
|---|---|---|
| Female (%) | 133 (77.3) | 124 (76.1) |
| Male (%) | 39 (22.7) | 39 (23.9) |
| Age (mean ± SD) | 85.9 ± 9.3 | 86.8 ± 8.7 |
| ASA | ||
| 2 | 51 (29.7) | 50 (30.7%) |
| 3 | 117 (68.0%) | 107 (65.6%) |
| 4 | 4 (2.3%) | 6 (3.7%) |
| AO/OTA classification | ||
| A1 (%) | 59 (34.3) | 61 (37.4) |
| A2 (%) | 96 (55.8) | 88 (54.0) |
| A3 (%) | 17 (9.9) | 14 (8.6) |
