Table 3 Analysis of proximal femur anatomic values in respect to stem anteversion: Stem anteversion relationship was statistically significant in respect to all proximal femur anteversion parameters. In the logistic regression no parameter was significantly associated with stem positioning within the 10°–20° of anteversion target (OR Odds Ratio)
Relationship of proximal femur anteversion with stem version | Probability of stem version 10°–20° | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mean (°) | SD | Min; Max | Linear Correlation | Linear Regression | Logistic regression | |||||
σ | P | β | R2 | P | OR | P | ||||
FNV | 6.6 | 8.8 | −28; 25 | 0.39 | < 0.001 | 0.21 | 15.6% | < 0.001 | 0.99 | 0.63 |
F-PCA | 11.2 | 8.6 | −13; 32 | 0.37 | < 0.001 | 0.20 | 14.0% | < 0.001 | 1.02 | 0.47 |
F-ACA | 6.4 | 8.8 | −26; 26 | 0.56 | < 0.001 | 0.30 | 31.8% | < 0.001 | 0.96 | 0.16 |
F-MAA | 8.7 | 7.9 | −11; 28 | 0.52 | < 0.001 | 0.31 | 27.1% | < 0.001 | 0.99 | 0.70 |
E-PCA | 20.7 | 8.4 | 4; 45 | 0.35 | < 0.001 | 0.19 | 12.0% | < 0.001 | 1.00 | 0.92 |
E-ACA | 3.7 | 9.4 | −26; 35 | 0.52 | < 0.001 | 0.26 | 26.9% | < 0.001 | 0.97 | 0.24 |
E-MAA | 12.1 | 7.7 | −7.5; 40 | 0.51 | < 0.001 | 0.31 | 25.8% | < 0.001 | 0.98 | 0.47 |
D-PCA | 27.6 | 8.5 | 9; 52 | 0.35 | < 0.001 | 0.19 | 12.5% | < 0.001 | 0.99 | 0.71 |
D-ACA | 3.4 | 8.9 | −24; 34 | 0.46 | < 0.001 | 0.24 | 20.8% | < 0.001 | 0.98 | 0.44 |
D-MAA | 15.5 | 7.9 | −5; 40 | 0.44 | < 0.001 | 0.26 | 19.7% | < 0.001 | 0.98 | 0.54 |