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首页> 外文期刊>Journal of orthopaedics and traumatology: official journal of the Italian Society of Orthopaedics and Traumatology >Single harvesting in the all-inside graft-link technique: is the graft length crucial for success? A biomechanical study
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Single harvesting in the all-inside graft-link technique: is the graft length crucial for success? A biomechanical study

机译：全方位嫁接技术中的单收割：嫁接长度对成功至关重要吗？生物力学研究

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The all-inside graft-link technique for anterior cruciate ligament reconstruction is performed with two cortical suspension devices with adjustable loops on both femur and tibia. This technique requires meticulous graft preparation. The aim of this study was to biomechanically test three different graft configurations resulting from differences in initial graft length. Thirty bovine digital extensor tendons were arranged in three different ways: “half-quadrupled”, “tripled” and “quadrupled”. The final graft length was 65–75 mm. The specimens were fixed vertical to the loading axis of a tensile testing machine. After a static pre-conditioning of 50 N for 5 min, a load to failure test was performed and data regarding the ultimate failure load (UFL), the stiffness and mode of failure were recorded. The evaluation of UFL showed a significant differences between group means as determined by one-way analysis of variance (F = 21.92, p = 0.002). Post hoc comparisons showed a significantly better UFL of “tripled” (p = 0.007) and “quadrupled” preparations (p = 0.014) compared to the “half-quadrupled” configuration, with no significant differences between “tripled” and “quadrupled” grafts (p = 0.061). No significant differences were found when evaluating the stiffness between the groups. Failure occurred by tendon slippage across the suture in all specimens. The “quadrupled” tendon achieved the best UFL, with even the “tripled” configuration having sufficient biomechanical characteristics to withstand the loads experienced during early rehabilitation. For this reason, with a total semitendinosus length of less than 260 mm it could be better to “triple” instead of “half-quadruple” it to achieve better performance of the graft.
机译：使用两个具有可调环的股骨和胫骨皮质悬吊装置，进行前交叉韧带重建的全内侧移植物连接技术。该技术需要精心准备移植物。这项研究的目的是对由于初始移植长度不同而产生的三种不同的移植物形态进行生物力学测试。三十个牛数字伸肌腱以三种不同的方式排列：“半四倍”，“三倍”和“四倍”。最终移植长度为65-75mm。将样品垂直于拉伸试验机的加载轴固定。在50 N的静态静态预处理5分钟后，进行了破坏测试，并记录了有关最终破坏负载（UFL），破坏刚度和破坏模式的数据。通过单因素方差分析确定，UFL的评估显示组平均值之间存在显着差异（F = 21.92，p = 0.002）。事后比较显示，“三重”和“四重”移植物的“三重”（p = 0.007）和“四重”制剂（p = 0.014）的UFL明显更好，而“三重”和“四重”移植物之间没有显着差异（p = 0.061）。在评估组之间的刚度时，没有发现显着差异。在所有样本中，肌腱滑过缝合线均会导致失败。 “四足”肌腱获得了最佳的UFL，即使“三足”肌腱也具有足够的生物力学特性，可以承受早期康复期间承受的负荷。因此，总半腱长度小于260mm时，最好将其“三重”，而不是“半四倍”，以获得更好的移植物性能。

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