Table 1 Effect of femoral external rotational osteotomy location on femoral torsion correction (negative pin angle change is external rotation)
From: Femoral derotational osteotomy level does not effect resulting torsion
Pin angle Change (°) | Femoral Torsion Change (°) | Regression Analysis | ||||
|---|---|---|---|---|---|---|
Range | Range | R square | β | Significance | ||
Mechanical Axis | Proximal | −8.5 – 30.8 | 24.1–6.8 | 0.654 | 0.439 | 0.015 |
Midshaft | −2.0 – 31.4 | 24.0–5.5 | 0.724 | 0.466 | 0.0007 | |
Distal | 3.4–33.4 | 27.4–9.3 | 0.892 | 0.590 | < 0.001 | |
Anatomic Axis | Proximal | −4.0 – 27.8 | 24.1–6.0 | 0.641 | 0.532 | 0.017 |
Midshaft | −5.9 – 31.7 | 22.4–3.4 | 0.770 | 0.463 | 0.004 | |
Distal | 0.4–32.4 | 28.0–8.2 | 0.862 | 0.520 | 0.001 | |