Fig. 1From: Modified F configuration in the treatment of Pauwels type III femoral neck fracture: a finite element analysisGeometric modeling of four internal fixation of femoral neck fracture. a1, a2: the traditional inverted triangular cannulated screw model; b1, b2: the F-technique cannulated screw model; c1, c2: the modified F-technique cannulated screw model using a fully threaded screw instead of a partially threaded distally; d1, d2: the dynamic hip screw coupled with anti-rotational screw modelBack to article page