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.com/patents/US6796988?utm_source=gb-gplus-sharePatent US6796988 - Image guided spinal surgery guide, system, and method for use thereof
