An apparatus and method is provided to maintain vertebrae in a desired relationship. The apparatus includes a rod, a plurality of clamps, and a plurality of fastener assemblies. The method invovles inserting threaded members into openings in a displaced vertebra and at least one vertebra on each side...http://www.google.de/patents/US4719905?utm_source=gb-gplus-sharePatent US4719905 - Apparatus and method for maintaining vertebrae in a desired relationship
