Orthopedic ACL reconstruction surgery equipment

Self-graft collection Hamstring tendon collection set: including tendon stripper (arc design to avoid damage to surrounding tissues), tendon ruler (accurately measure the length / diameter the tendon, which needs to be 8-10mm to meet the reconstruction requirements), tendon cutting knife (sharp thin blade, reduce the destruction of tendon). Patellar tendon collection tool: patellar tendon bone block chisel (wedge blade, to cut the patellar tendon graft with bone block), block clamp (temporary fixation of bone block, to prevent displacement). Allograft / artificial graft supporting instruments Graft pre-loader: to pre-placeogeneic tendon or artificial ligament (such as LARS artificial ligament) in the cannula, to facilitate precise implantation in the tunnel during surgery. Tendon expander: gently expand the graft to improve its flexibility and avoid breaking during implantation. 2. Fixation devices (the key to maintaining graft stability) (a)emoral side fixation instruments Interference screw Material: Titanium alloy, PEEK (Polyetheretherketone, biocompatible, can avoid metal artifacts, does affect postoperative MRI review). Features: Through the "interference fixation" principle, the graft is closely attached to the femoral tunnel wall, the diameter needs to the tunnel (usually 0.5-1mm smaller than the tunnel), the length is 15-25mm. Suspension-type fixation deviceEndoButton (button plate): composed of titanium alloy button, polyester suture, through the femoral tunnel out and then turn over to fix, suitable for hamstring tendonfts, to provide "suspension - interference" double fixation, biomechanical stability is stronger. Plate with loop: integrated design, the loop ring is expanded passing through the tunnel, the plate is close to the femoral lateral cortical, suitable for large diameter grafts or revision surgery. (b) Tibial side fixation Interference screw: consistent with the femoral side principle, some of them use absorbable materials (such as polylactic-co-glycolic acid), are gradually degraded after surgery, avoiding secondary surgery to remove them. Cortical button: cooperate with suture to fix the end of the graft, suitable for the situation the tunnel diameter is relatively large, to reduce the destruction of bone. Bio-screw: with hydroxyapatite coating on the surface, to promote bone integration and the long-term fixation effect, often used for young patients or cases with better bone quality. 3. Auxiliary Surgical Instruments Tunnel preparation tools iming device: accurately locate the tunnel entrance and angle (femoral tunnel is usually 10°-15° inclined, tibial tunnel is 30°40° with the tibial plateau), to avoid damage to articular cartilage or blood vessels and nerves. Hollow drill: diameter 6-1mm (according to the diameter of the graft), with guide needle, to ensure that the tunnel wall is smooth and reduce graft wear. Tunnel expander: for-tuning the tunnel diameter to improve the match between the graft and the tunnel. Graft handling and implantation tools Tendon braider: braid the hamstringon into a bundle to enhance the tensile strength (tension after braiding can reach 1.5-2 times of the original tendon). Traction line pusher: to pull the graft through the tunnel, the pusher ensures that the end of the graft reaches the designated position, avoiding displacement. Tension meter: intraoperative of graft tension (the ideal tension is 20-30N).