NEW SYSTEM FOR FEMORAL FIXATION (TTS) IN ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION WITH HAMSTRING TENDONS

Graft fixation in anterior cruciate ligament reconstruction is a basic criterion for the outcome of the surgical procedure. Several solutions have been proposed; each of them had advantages and disadvantages, and the choice of a surgical technique often represents the surgeon’s opinion.The goal of the fixation is stability and incorporation of the graft in the bone tunnels. Bone-patellar tendon-bone graft has the advantage of bone to bone fixation, which is impossible using tendon grafts. Femoral fixation techniques for hamstrings can be classified as follows: compression techniques, expansion techniques and suspension techniques (cortical or cancellous).Top Traction System (TTS) is a new technique for femoral fixation using hamstrings. Here, a retrograde screw is fixed to the anterolateral cortex of the femur. A ring is fixed to the screw to pass the tendons.The screw is self-threading, 28 mm long and 6.5 mm in diagmeter; its pull-out strength is 1350 N. The screw is made from a titanium alloy and only a...