Table 2 Definitions of curve positions.
From: Evolutionary roots of the risk of hip fracture in humans
Curve name | Curve definition |
|---|---|
1- Femoral head | A manual curve placed on the femoral head-neck intersection, between landmarks 2 and 9 (Fig. 1c, d). |
2- Intertrochanteric crest | A manual curve placed on the intertrochanteric crest, starting at landmark 12 (Fig. 1c, d). |
3- Femoral neck | A semi-automatic curve placed around the femoral neck at its midpoint. An anchor point is placed at landmark 8, and then two additional points are chosen on the anterior and posterior aspects of the femoral neck at its midpoint. The program calculates the area of all curves that pass through the anchor point and that are ±15° from the two selected points, and then chooses the curve with the smallest cross-sectional area. |
4 - Subtrochanteric | A semi-automatic curve placed around the femoral shaft below the lesser trochanter. An anchor point is placed at landmark 6, and then two additional landmarks are placed on the medial and lateral aspects of the femoral shaft at the same level as the anchor point. The program calculates the area of all curves that pass through the anchor point and that are ±15° from the two selected points, and then chooses the curve with the smallest cross-sectional area. |
