IO asked the Medical AMRC – part of the University of Sheffield Advanced Manufacturing Research Centre with Boeing – to evaluate two new designs it had developed with leading orthopaedic surgeons for specialised orthopaedic screws.

The screws, made from biomedical Titanium alloy TI-6AL-4V ELI (ASTM F 136), are designed for certain surgical procedures, including reconstructing the knee’s anterior cruciate ligament.

Reconstruction is carried out by inserting a piece of healthy tendon in place and securing it to the bone with a screw, over which the bone will grow.

The medical AMRC worked with IO to combine aspects of their two designs and create one universal design that reduced the force needed to insert the screw while maintaining fixation.


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Fasteners, The Fastener Museum