Table 4.
Predictive factors for failure with corresponding hazard ratios
| Predictive factor | Univariate | Multivariate | ||
|---|---|---|---|---|
| Hazard ratio* | p value | Hazard ratio* | p value | |
| Demography | ||||
| Age > 47 years | 5.1 (3.8–6.4) | 0.016 | ||
| BMI > 25 kg/m2 | 5.1 (3.8–6.3) | 0.011 | 6.4 (5.2–8.1) | 0.009 |
| Preoperative factors | ||||
| LCE angle > 50° [52] | 5.1 (3.5–6.6) | 0.040 | ||
| Sharp angle < 34° [32] | 4.9 (3.7–6.1) | 0.012 | ||
| Osteoarthritis ≥ Tönnis Grade 1 [46] | 12.0 (10.5–13.6) | 0.002 | 13.3 (11.8–14.9) | 0.001 |
| Postoperative factors related to surgical accuracy | ||||
| LCE angle > 40° [52] | 4.7 (3.5–5.9) | 0.009 | 4.2 (2.8–5.6) | 0.042 |
| Acetabular index < −8° [46] | 2.5 (1.7–3.3) | 0.024 | ||
| Posterior coverage > 56% | 3.5 (2.4–4.5) | 0.027 | 6.0 (4.3–7.6) | 0.037 |
* Mean ± SD (range); endpoints were defined as conversion to THA, radiographic progression of osteoarthritis, and/or a
Merle d’Aubigné-Postel score less than 15 points; BMI = body mass index; LCE = lateral center-edge.