Table 4.
Results (hazard ratios – HR) from the Cox regression models with revision as endpoint
| Fixation point and group | HR (CI) | Adjusted HR (CI) a |
|---|---|---|
| Femoral fixation | ||
| Cortical fixation | ||
| Endobutton | Ref. | Ref. |
| Other | 0.9 (0.8–1.2) | 0.8 (0.7–1.1) |
| Transfemoral fixation | ||
| Rigidfix | 0.7 (0.6–0.8) | 0.7 (0.6–0.8) |
| Transfix | 0.7 (0.5–0.8) | 0.7 (0.6–0.9) |
| Other | 1.2 (0.9–1.8) | 1.1 (0.7–1.6) |
| Interference screw | 1.1 (0.9–1.3) | 1.1 (0.9–1.4) |
| Other/unknown | 1.1 (0.7–1.7) | 1.1 (0.7–1.9) |
| Tibial fixation | ||
| Cortical fixation | 1.1 (1.0–1.4) | 1.1 (0.9–1.4) |
| Interference screw | Ref. | Ref. |
| Intrafix | 0.9 (0.8–1.1) | 1.0 (0.9–1.2) |
| Retro interference screw | 1.8 (1.2–2.6) | 1.9 (1.3–2.9) |
| Rigidfix | 0.6 (0.3–0.9) | 0.9 (0.5–1.4) |
| Other/unknown | 1.1 (0.7–1.6) | 1.0 (0.6–1.5) |
a
Adjusted analysis model stratified for country (Sweden, Denmark, Norway) and adjusted for gender, age at surgery (5-year categories), activity at primary injury, and corresponding fixation in tibia or femur.