Complication rates of anterior cruciate ligament reconstruction (ACL-R) were reported to be around 15%. Although it is a very common arthroscopic surgery with good outcomes, breakage and migration of fixators are still possible to occur due to stability issue. One of the factors that affects the mechanical stability of fixators is its length. Therefore, the aim of this paper is to analyze the biomechanical effects of different lengths of fixators (cross-pin technique) towards the stabilities of the knee joint after ACL-R. Finite element analyses of knee joint with DST grafts and fixators were carried out. Mimics and 3-Matic were used in the development of knee joint models, while the grafts and fixators were designed by using SolidWorks software. All models were remeshed in the 3-Matic and numerical analysis was performed via MSC.Marc Mentat software. A 100 N anterior tibial load was applied onto the tibia to simulate the anterior drawer test after the surgery and proximal femur was fixed at all degrees of freedom. Based on the findings, cross-pin with 40[Formula: see text]mm in length provided the most favorable option for better treatment of ACL-R, where it could promote osseointegration and preventing fracture.

中文翻译：

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不同长度交叉针在前交叉韧带重建中的生物力学效应：有限元分析

据报道，前交叉韧带重建 (ACL-R) 的并发症发生率约为 15%。虽然这是一种非常常见的关节镜手术，效果很好，但由于稳定性问题，固定器仍有可能发生断裂和移位。影响固定器机械稳定性的因素之一是其长度。因此，本文的目的是分析不同长度的固定器（交叉针技术）对 ACL-R 后膝关节稳定性的生物力学影响。使用 DST 移植物和固定器对膝关节进行了有限元分析。Mimics 和 3-Matic 用于膝关节模型的开发，而移植物和固定器是使用 SolidWorks 软件设计的。所有模型都在 3-Matic 中重新划分网格，并通过 MSC 进行数值分析。Marc Mentat 软件。在胫骨上施加 100 N 的胫骨前负荷以模拟手术后的前抽屉试验，并将股骨近端固定在所有自由度。根据研究结果，长度为40[公式：见正文]mm的交叉针为更好地治疗ACL-R提供了最有利的选择，它可以促进骨整合和预防骨折。