Screw hole preparation. A, Notch is made for passage of screw head. Drilling should begin near surface of bone, not in depths of notch. B, Screw head sits in untapered end of notch after passing through it. Joint or fusion surfaces remain well reduced. (From Manoli A, Hansen S: Screw hole preparation in foot surgery, Foot Ankle 11:105, 1990.) SEE TECHNIQUE 82.10.