External fracture fixation is a common orthopaedic procedure that is used increasingly in a variety of trauma settings. Titanium self-drilling/self-tapping Schanz pins offer a one-step insertion where pre-drilling is not required because the self-drilling tip acts like a new, sharp drill bit. However, pin track infection is a common complication in external fixation systems with infection rates as high as 30 %. The critical consequences of infected pin sites are pin loosening, fracture destabilisation and osteomyelitis, thus leading to additional surgical interventions and delayed or non-union. In addition, Ti alloys are characterised by low hardness and low wear resistance. Therefore, the wear of Ti self-drilling tip or cutting edge necessitates an increased insertion force. This will in turn result in increased temperature at bone-pin surface during insertion, which would cause damage to the bone and retard its healing after operation.