A surgical offset guide tool for making a subsequent preparation on an outer surface of a natural femoral head following a first oversize preparation is disclosed. The guide tool guides a rotary cutter about an offset axis of revolution, the axis being offset from a datum having an axis coaxial with...http://www.google.com.au/patents/US20070299451?utm_source=gb-gplus-sharePatent US20070299451 - Offset tool guide for femoral head preparation
