Fig. 2

Boundary conditions and calculated regions in the proximal femur. a A load of 250% of the body weight was applied on the reference point (P1), which was coupled with the entire weight-bearing area along the mechanical axis (dotted line) of the femur. The distal femur was fully restrained to movement. b Four regions were calculated: the weight-bearing area, central femoral head, femoral neck, and trochanteric and subtrochanteric regions