A guide is disclosed for use in performing spinal surgery to prepare across a spinal disc and adjacent vertebrae an implantation space. The guide is associated with a computer controlled surgical navigation system employing an energy-detecting array to track positions of the guide in three dimensional...http://www.google.co.uk/patents/US8105339?utm_source=gb-gplus-sharePatent US8105339 - Image guided spinal surgery guide system and method for use thereof
