Table 4.
Effect of fixation method on survival of hip replacements
| Fixation method | Survival without revision | Risk of revision | ||||
|---|---|---|---|---|---|---|
| 1 year (%) (95% CI) |
3 years (%) (95% CI) |
5 years (%) (95% CI) |
10 years (%) (95% CI) |
0–1 years HR (95% CI) |
More than 1 year HR (95% CI) |
|
| Type of hip replacement | ||||||
| Cemented | 98.8 (98.4–99.2) | 98.1 (97.7–98.6) | 97.8 (97.3–98.3) | 97.4 (96.9–98.0) | 1 | 1 |
| Cementless | 96.6 (94.9–98.3) | 95.5 (93.6–97.5) | 94.8 (92.6–97.0) | 93.9 (91.1–96.7) | 2.91 (1.65–5.13) | 1.83 (0.82–4.10) |
| Hybrid | 98.6 (97.6–99.7) | 98.1 (96.9–99.4) | 98.1 (96.9–99.4) | 98.1 (96.9–99.4) | 1.16 (0.52–2.56) | 0.41 (0.10–1.69) |
| Fixation of femoral stem | ||||||
| Cemented | 98.8 (98.4–99.1) | 98.1 (97.7–98.5) | 97.8 (97.3–98.3) | 97.2 (97.0–98.1) | 1 | 1 |
| Cementless | 96.6 (94.9–98.3) | 95.5 (93.6–97.5) | 94.8 (92.6–97.0) | 93.9 (91.1–96.7) | 1.69 (1.28–2.23) | 1.40 (0.94–2.09) |
| Fixation of acetabular cup | ||||||
| Cemented | 98.8 (98.4–99.2) | 98.1 (97.7–98.6) | 97.8 (97.3–98.3) | 97.4 (96.9–98.0) | 1 | 1 |
| Cementless | 97.6 (96.6–98.6) | 96.9 (95.8–98.0) | 96.6 (95.3–97.8) | 96.2 (94.7–97.6) | 1.41 (1.10–1.81) | 1.02 (0.71–1.46) |
HR = hazard ratio.