Bi-condylar tibial plateau fractures are demanding to treat due to the complex geometry and the articular comminution. The presence of a coronal fracture line plays a crucial role in the fixation strategy. Disregarding this fracture line in previous biomechanical studies and established fracture classifications resulted in a lack of detailed knowledge regarding the influence of medial-posterior fragments on implant load sharings. This study aimed to evaluate the effects of coronal splits on stress distributions within the implants using the finite element analysis (FEA). FE models with (Fracture C) and without the coronal split (Fracture H) were developed and validated in order to assess stress distributions within the implant components. Comparing FE outcomes with biomechanical experiments indicated that both fracture models were well validated. FE evaluations demonstrated that the coronal split caused destabilization of the medial tibia, as well as a shift in the peak-stress areas from the middle part of the plate to the proximal section, and a 61% increase in the maximum stress of the kick-stand screw. Therefore, FE models based on clinically-relevant fracture morphologies can provide a reliable tool to assess implant failures as well as to compare different fracture fixation techniques.

由于复杂的几何形状和关节粉碎，双髁胫骨平台骨折需要治疗。冠状骨折线的存在在固定策略中起着至关重要的作用。在之前的生物力学研究和既定的骨折分类中忽视这条骨折线，导致缺乏关于内外骨折块对种植体负荷分配的影响的详细知识。本研究旨在使用有限元分析 (FEA) 评估冠状裂隙对植入物内应力分布的影响。开发并验证了具有（骨折 C）和没有冠状裂隙（骨折 H）的 FE 模型，以评估种植体组件内的应力分布。将有限元结果与生物力学实验进行比较表明，两种骨折模型都得到了很好的验证。有限元评估表明，冠状裂开导致胫骨内侧不稳定，峰值应力区域从钢板中间部分向近端部分移动，踢腿的最大应力增加了 61%。支架螺丝。因此，基于临床相关骨折形态的有限元模型可以提供可靠的工具来评估种植体失败以及比较不同的骨折固定技术。