Tiefenboeck Thomas M, Hirtler Lena, Winnisch Markus, Joestl Julian, Koch Thomas, Komjati Micha, Hofbauer Marcus, Ostermann Roman C
Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria.
Department of Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.
Knee. 2018 Jun;25(3):427-433. doi: 10.1016/j.knee.2018.03.010. Epub 2018 Apr 6.
In anterior cruciate ligament reconstruction, different suture types are used for graft link preparation. Thus the aim of this study was to determine whether differences in the diameter of the suture used influence biomechanical stability of the prepared graft. We hypothesized that the use of a greater suture diameter leads to a higher load to failure rate in tested graft links.
In an anatomic specimen study, ligament preparation was enrolled in 15 cadaveric knees. The material used was the semitendinosus/gracilis tendon, which was fresh frozen (-80°) after harvesting for four weeks. The grafts were then defrosted, randomized into two groups and prepared with the same technique: 12 with a suture; FiberWire No. 2 and 12 with a FiberWire No. 0.
Overall, the group using FiberWire No. 2 presented with a mean load to failure rate of 730.67N, mean overall final elongation of the graft was 5.98mm. In the FiberWire No. 0 group mean load to failure was with a mean overall elongation of the graft of 6.96mm. Significant differences (P=0.006) between the two groups with regard to the load to failure rate were found, with FiberWire No. 2 withstanding forces better. There was no difference in elongation of the grafts or mode to failure between the two groups.
Graft preparation with a bigger suture type is recommended to gain better load to failure rates, also in smaller-diameter grafts. Regarding the elongation rate, different suture types did not influence the outcome.
Anatomical specimen study, Level III.
在前交叉韧带重建中，不同的缝线类型用于移植物连接的制备。因此，本研究的目的是确定所使用缝线直径的差异是否会影响制备好的移植物的生物力学稳定性。我们假设使用更大直径的缝线会导致测试的移植物连接具有更高的失效负荷率。
在一项解剖标本研究中，对15具尸体膝关节进行韧带制备。所用材料为半腱肌/股薄肌腱，采集后在-80°新鲜冷冻4周。然后将移植物解冻，随机分为两组，采用相同技术制备：12例使用2号FiberWire缝线；12例使用0号FiberWire缝线。
总体而言，使用2号FiberWire缝线的组平均失效负荷率为730.67N，移植物的平均总最终伸长率为5.98mm。在0号FiberWire缝线组中，平均失效负荷为移植物平均总伸长率为6.96mm。两组在失效负荷率方面存在显著差异（P = 0.006），2号FiberWire缝线承受力更好。两组移植物的伸长率或失效模式没有差异。
建议使用更大缝线类型进行移植物制备，以获得更好的失效负荷率，在较小直径的移植物中也是如此。关于伸长率，不同的缝线类型不影响结果。
解剖标本研究，III级。
