The I.B.S.® ankle fixation is self-drilling. It can be installed with a guide wire. It is available with a 2.2 or 2.7mm diameter. It is manufactured in titanium alloy and packaged in a sterile tube. The design of the I.B.S.® snap-off screw improves self-drilling characteristics and reduces risks of rupture below the head. Ease of use is thus improved. The I.B.S.® snap-off screw is designed to meet the needs of surgeons in the fixation of Weil type osteotomies and more generally for the monocortical synthesis of short bones. The I.B.S.® snap-off screws are available with the NeoSys® single use instrumentation.