Fig. 4

We used a 3.0 mm drill bit to drill a bone path transversely at the thickest part of the bone block, crossed the intertwined double-stranded steel wire through the bone path, crossed and bypassed the two ends of the steel wire from the inner side of the femur to the outer side of the femur respectively, and tightened the two ends of the steel wire at the outer side of the lower edge of the greater trochanter bone block and the femoral transition, in the same direction as the previous double-stranded steel wire winding, and the bone block was firmly fixed to the proximal femur. The steel wire at the proximal end tightened the greater trochanter inward and downward. The steel wire at the lower and outer sides of the greater trochanter bone block tightened the bone block inward in the lower direction. At the same time, it avoided the tendency of the distal end of the bone block to shift outward due to the tightening of the steel wire at the proximal end, which was similar to the fixation of the tension band