Table 5 Logistic regression analysis for failure risk factors
Parameters | Univariate P-value | Multivariate P-value | Odds Ratio (95% CI) |
|---|---|---|---|
Overall outcome (Survived: 305 / Failed: 32) | |||
Bilateral knee operation | 0.592 | Not included | Â |
Age | 0.125 | 0.275 | 0.976 (0.933–1.020) |
Sex (male as reference) | 0.392 | Not included | Â |
Diagnosis (ON as reference) | 0.567 | Not included | Â |
BMI | 0.522 | Not included | Â |
Hypertension | 0.735 | Not included | Â |
Diabetes mellitus | 0.190 | 0.143 | 0.319 (0.069–1.473) |
Femur size | 0.660 | Not included | Â |
Tibia size | 0.546 | Not included | Â |
Insert size | 0.306 | Not included | Â |
Pre-op aFTA | 0.098 | 0.967 | 0.997 (0.885–1.125) |
Post-op aFTA | 0.050 | 0.263 | 0.932 (0.825–1.054) |
ΔaFTA (absolute value) | 0.834 | Not included |  |
Pre-op PTS | 0.924 | Not included | Â |
Post-op PTS | 0.574 | Not included | Â |
ΔPTS (absolute value) | 0.906 | Not included |  |
Pre-op aMPTA | 0.149 | Not included | Â |
Post-op aMPTA | 0.212 | 0.083 | 0.911 (0.820–1.012) |
ΔaMPTA (absolute value) | 0.150 | 0.054 | 1.163 (0.998–1.356) |
Implant loosening (Survived: 305 / Failed: 11) | |||
Age | 0.057 | 0.017 | 0.909 (0.840–0.983) |
Hypertension | 0.081 | 0.035 | 0.179 (0.036–0.887) |
Insert wear (Survived: 305 / Failed: 7) | |||
Post-op aFTA | 0.005 | 0.019 | 0.363 (0.156–0.848) |
ΔPTS (absolute value) | 0.024 | 0.032 | 0.415 (0.186–0.928) |
Periprosthetic fracture (Survived: 305 / Failed: 3) | |||
Post-op aMPTA | 0.038 | 0.045 | 0.680 (0.467–0.991) |