The Use of Allografts in Posterior Cruciate Ligament Reconstructions: A Review of the Current Literature

As the largest intra-articular knee ligament, the posterior cruciate ligament (PCL) is rarely torn in isolation, given the required force to tear it. For high-grade PCL tears unresponsive to conservative treatment or with concomitant ligament tears, the PCL should be reconstructed. Understanding the anatomy and biomechanics of both bundles of the PCL facilitates successful ligament reconstruction. Although various surgical techniques have been studied for either biomechanical or clinical superiority, the selection of the optimal graft in PCL reconstructions remains largely surgeon preference. This review serves to summarize the current understanding of PCL reconstructions with an emphasis on allograft usage and outcomes.