A Prospective Comparison of 3 Hamstring ACL Fixation Devices—Rigidfix, BioScrew, and Intrafix—Randomized Into 4 Groups With 2 Years of Follow-Up

BackgroundNew devices for graft fixation in anterior cruciate ligament reconstruction are released to clinical use without clinical follow-up data.HypothesisThere is similar clinical outcome after either cross-pin or absorbable interference screw fixation in anterior cruciate ligament reconstruction with hamstring tendons.Study DesignRandomized controlled clinical trial; Level of evidence, 1.MethodsA total of 120 patients were randomized into 4 different groups (30 each) for anterior cruciate ligament reconstruction with hamstring tendons: femoral Rigidfix cross-pin and Intrafix tibial expansion sheath with a tapered expansion screw; Rigidfix femoral and BioScrew interference screw tibial fixation, BioScrew femoral and Intrafix tibial fixation; or BioScrew fixation into both tunnels. The evaluation methods were clinical examination, knee scores, and instrumented laxity measurements.ResultsTen patients were completely lost to follow-up and 3 revisions were done before the 2-year follow-up, leaving 107 of 1...