Why does AO recommend self-tapping screws?
Synthes self-tapping screws have several advantages. The time required to tap a screw hole is eliminated thereby speeding the procedure. The osseous thread cutting is always done with a “new” cutting flute thereby guaranteeing optimal performance and minimal heat generation. And the expense of replacing taps is eliminated. The disadvantages of self-tapping screws is that if a screw is being reinserted it could theoretically cut a new thread. Also, the screw flute is shallow and may become clogged during insertion into thick, dense cortical bone.
