Fig. 4From: Load distribution between cephalic screws in a dual lag screw trochanteric nail“Equivalent von Mises stresses” in the cortical bone of the proximal fragment for two different screw configurations. Superior screw 105 mm, inferior screw 105 mm (a). Superior screw 90 mm, inferior screw 90 mm (b). Indicated are the stress values at the inferior cortex of the femoral neck (a 35 MPa, b 50 MPa)Back to article page