Comparison of hamstring tendon autograft and tibialis anterior allograft in arthroscopic transtibial single-bundle posterior cruciate ligament reconstruction

Purpose To compare the outcomes between hamstring tendon autograft and tibialis anterior allograft in arthroscopic transtibial single-bundle posterior cruciate ligament (PCL) reconstruction. Methods Thirty-seven patients undergoing isolated single-bundle PCL reconstruction were enrolled in this study, and their data were retrospectively analyzed. They were divided into group A [4-strand hamstring tendon autograft (4SHG), n = 18] and group B [2-strand tibialis anterior allograft (2STAG), n = 19] and followed up for 2 years at least. Several parameters including the International Knee Documentation Committee score, Lysholm knee score, Tegner activity rating and knee laxity arthrometer were evaluated, and physical examination was performed preoperatively and postoperatively, and postoperative complications were also observed in all patients. Meanwhile, the postoperative posterior instability was compared between the affected knee and the contra-lateral knee. Results Compared with preoperative knee laxity and function, both groups had significant improvement postoperatively ( P