Comparison of the effect of the graft with double strands peroneus longus tendon and with the four strands hamstring tendon on reconstruction of the posterior cruciate ligament injury

Background This prospective study was to analyze the clinical effect of double-stranded long peroneal tendon and the four strands hamstring tendon in reconstruction of posterior cruciate ligament (PCL), and to investigate the effectiveness and safety of the two surgical approaches in reconstruction of PCL, so as to provide guidance for clinical treatment of PCL injury. Methods Total 48 patients with complete rupture of PCL treated in our hospital from July 2015 to February 2017 were selected and divided into the Group A (reconstructed with double strands peroneus longus tendon, 25 cases) and the Group B (four strands hamstring tendon, 23 cases) according to the different grafts. Results The intraoperative time for tendon extraction in the Group A (20.87 ± 2.07 min) was significantly shorter than that in the Group B (26.79 ± 2.32 min). Compared with pre-operation, the tibial posterior displacement of the two groups decreased significantly 24 months after operation, and IKDC score, Lysholm score and Tegner score increased significantly. Nevertheless, the IKDC score, Lysholm score, Tegner score, AOFAS score and Maryland score between the two groups before and after operation were no significant differences. Compared with the quadrupled hamstring tendon, the double-stranded peroneal longus tendon has the advantages of simple and safe tendon extraction. Conclusions Both surgical methods are effective for the treatment of PCL injury. When the four strands hamstring tendon is accidental (tendon rupture or tendon variation) or ineffective, the peroneal longus tendon will be a good choice.