In 35 body weight Great Dane a teflon texture was used as a prosthesis of the origo of the long digital extensor tendon. By the lateral parapatellar incision the stifle joint was opened. Translocated to the intermeniscal ligament avulsed tendon was uncovered and 2.5 mm in diameter hole in the osseous end of the tendon was bored. Through this hole a teflon texture was passed and the margines were sutured to itself, close holding the osseous end of the tendon. The teflon was threaded through the tunnel drilled from the point of the natural origo to the central area of the lateral condyle. The teflon band was knoted under the tension and the button was seated at the exit of the tunnel on the lateral surface of the condyle. The joint and soft tissues were sutured by interrupted sutures (dexon 3/0) and skin by continuous Halsted suture of 3/0 polyamid. Debecilline at a dose of 1.2 million iu was administered intramuscularly. Healing was rapid and in the course of one year any lameness and other disturbances were not observed.