A new method of ACL reconstruction was designed and compared biomechanically in canine cadaver stifles by means of the Paatsma and Arnoczky methods. In the new method the substitute was done of a tendon as a two-bundle structure. The ends of the bundles were secured in tunnels drilled in the tibia and in the femur by insertion of screws along the tunnel axis. The reduction of the cranial drawer value after each repair was expressed as a percentage of the laxity in the same stifle after ACL excision. The stifles were tested both in 90° and 180° flexion. The new method reduced the cranial drawer significantly better than other tested methods. The obtained data suggest that this was not because of the two-bundle structure but due to the method of fixation of the ends of the bundles.