 Next, the three most proximal holes were sequentially drilled using a 2.5 mm drill bed, depth gauged and then a 3.5 mm fully threaded cortical screw was placed in each. 
Next , the three most proximal holes were sequentially drilled using a 2.5 mm drill bed , depth gauged and then a 3.5 mm fully threaded cortical screw was placed in each .