Abstract: Ancillary instruments for the reconstruction of a posterior cruciate knee ligament by drilling one or two tibial canals using a surgical operation performed from the front. The instrument set includes a system for protecting the posterior surface of the upper tibia end and an aiming device for guiding at least one drill. The protection system comprises at least one bent tube removably coupled by an extension portion to a locking handle for securing the tube through the intercondylar fossa of the femur on the posterior surface of the upper end of the tibia, so that the distal end of the bent tube serves as the stop to the drill guided by the aiming device and emerging from the tibial bone canal, and the bent tube can form, together with a rectilinear wire feed-through tube disposed in the place of the drill, a continuous canal for guiding a metallic loop used to draw the prosthetic posterior cruciate knee ligament from the anterior surface of the tibia to the femur insertion point.

Abstract: An agraffe or staple-shaped element for osteosynthesis intended for fixing the focus of an osteotomy while awaiting consolidation of web from which issue two lateral arms having pointed ends adapted to penetrate in the bone. The web of the agraffe comprises two parts inclined with respect to each other and forming an outwardly open obtuse angle. Each of the lateral arms of the agraffe presents, near its zone of join with the web, fins projecting from the front faces of this arms, such fins reinforcing the anchoring of the agraffe in the zone.