A mill guide instrument for guiding a tissue cutting tool is provided that is made up of subassemblies of a guide body and a mill guide. The guide body has a distal section dimensioned to fit into a bore in bone and a removable template with a guide surface unique to a proposed cavity shape. The mill...http://www.google.de/patents/US20030171756?utm_source=gb-gplus-sharePatent US20030171756 - Surgical milling instrument for shaping a bone cavity
