Biomechanical evaluation of a novel transtibial posterior cruciate ligament reconstruction using high-strength sutures in a porcine bone model  

作　　者：Ming-Yi Duan Rui Sun Lei-Ting Zhuang Hang-Zhou Zhang 

机构地区：[1]Department of Orthopedics,Joint Surgery and Sports Medicine,First Affiliated Hospital of China Medical University,Shenyang,Liaoning 110001,China

出　　处：《Chinese Medical Journal》2021年第19期2316-2321,共6页中华医学杂志（英文版）

摘　　要：Background:Multiple techniques are commonly used for posterior cruciate ligament(PCL)reconstruction.However,the optimum method regarding the fixation of PCL reconstruction after PCL tears remains debatable.The purpose of this study was to compare the biomechanical properties among three different tibial fixation procedures for transtibial single-bundle PCL reconstruction.Methods:Thirty-six porcine tibias and porcine extensor tendons were randomized into three fixation study groups:the interference screw fixation(IS)group,the transtibial tubercle fixation(TTF)group,and TTF+IS group(n=12 in each group).The structural properties of the three fixation groups were tested under cyclic loading and load-to-failure.The slippage after the cyclic loading test and the stiffness and ultimate failure load after load-to-failure testing were recorded.Results:After 1000 cycles of cyclic testing,no significant difference was observed in graft slippage among the three groups.For load-to-failure testing,the TTF+IS group showed a higher ultimate failure load than the TTF group and the IS group(876.34±58.78 N vs.660.92±77.74 N[P<0.001]vs.556.49±65.33 N[P<0.001]).The stiffness in the TTF group was significantly lower than that in the IS group and the TTF+IS group(92.77±20.16 N/mm in the TTF group vs.120.27±15.66 N/m in the IS group[P=0.001]and 131.79±17.95 N/mm in the TTF+IS group[P<0.001]).No significant difference in the mean stiffness was found between the IS group and the TTF+IS group(P=0.127).Conclusions:In this biomechanical study,supplementary fixation with transtibial tubercle sutures increased the ultimate failure load during load-to-failure testing for PCL reconstruction.

关 键 词：Posterior cruciate ligament Transtibial technique BIOMECHANICS Interference screw High-strength sutures 

分 类 号：R687.4[医药卫生—骨科学] R318.01[医药卫生—外科学]