Anterior cruciate ligament (ACL) reconstruction remains one of the most common orthopedic procedures performed today, with more than 1,000,00 ACL reconstructions performed annually in the US. Allograft reconstruction is becoming a common choice for ACL reconstruction. Advantages of allograft use include decreased perioperative morbidity, more rapid recovery of function and return to activities of daily living, and improved cosmesis. Potential limitations include disease transmission, infection and graft rejection, and failure of biological incorporation.
1 (Achilles)-, 2 (posterior tibialis)-, and 4 (semitendinosus)- stranded allografts are used for soft tissue ACL reconstruction; however, the fixation properties of fixation devices are not well assessed. This study by Dr. Verma hypothesized that there are no differences in the biomechanical characteristics of 1-, 2-, and 4-stranded allograft tibial fixation. Sixty-three fresh-frozen porcine tibiae were used to evaluate the fixation of 1-, 2-, and 4-stranded human tendon allografts (Achilles, posterior tibialis, and semitendinosus) with 3 fixation devices (Delta, Intrafix, and Calaxo screws).