Patent ID: 7594929

Claim:
A method for fixing a ligament graft into a bone tunnel, the method comprising: making a graft insertion tunnel in a tibia and in a femur and making a helical screw thread in each of the tunnels; preparing a ligament graft having a plurality of poles to an appropriate dimension and forming a multiple strands closed loop; slipping at least one relay tension strip through each of the poles of the graft; passing one of the relay strips through the tunnel in the tibia and another of the relay strips through the tunnel in the femur and pulling the graft along behind the relay strips; and introducing a screw between two strands of each relay strip and immobilizing each one of the relay strips by pressing the screw against a respective one of the helical screw threads in each of the tunnels made in a bone, the screw comprising: a cylindrical proximal part with a length of between 0 and 10 mm; a conically tapered intermediate part; and a blunted screw thread with a long pitch formed on both the cylindrical proximal part and the tapered intermediate part; wherein the tapered intermediate part has a cross section that tapers towards a plain cylindrical distal part with a rounded and blunt end, a diameter of the cylindrical distal part is at least equal to a diameter of a bone tunnel.