The present invention provides a shaping guide to permit accurate shaping of the tibial plateau while saving the anterior cruciate ligament. An alignment rod is located anterior to the anterior cruciate ligament and along the anterior cortex of the intermedullary canal of the tibia provides points of...http://www.google.de/patents/US5002545?utm_source=gb-gplus-sharePatent US5002545 - Tibial surface shaping guide for knee implants
