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首页> 外文会议>IEEE EMBS Conference on Biomedical Engineering and Sciences >Screws placement effect on locking compression plate (LCP) for tibial oblique fracture fixation
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Screws placement effect on locking compression plate (LCP) for tibial oblique fracture fixation

机译：用于锁定压缩板（LCP）的螺钉放置效果胫骨斜骨折固定

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One of the basic principles for internal fixation is the achievement of stable construct for proper bone healing. Locking compression plate (LCP) achieved it through locking screws that create a fixed-angle construct providing angular stability. The plate and screws combination to construct a stable fixation depends on factors such as the type of fracture and surgical preference. The optimum combination can provide optimum result in terms of achieving boney union. In this study, three combinations of screw placement with only one screw for each bone fragment for a fracture fixation construct using LCP were analysed via finite element method. Three dimensional model of a tibia and fibula were reconstructed from computed tomography image datasets, and an oblique fracture was simulated at the midshaft of the tibia. Eight-hole LCP was placed across the fractured line and three screws placement were simulated. The properties of bone were assigned with a stiffness of 17GPa and Poisson's ratio of 0.3, ligaments were modelled as rigid links, and load equivalent to three times the body weight was applied equally to the tibial plateau. Results showed that there placement of screws the closest to the fracture side will provide more stabiliy and less stress to the implant and the fracture construct itself. The results are unique to the simulated oblique fracture, and other types of fracture could also be analysed using the same method.
机译：其中一个内固定的基本原则是正确骨愈合稳定结构的实现。锁定加压板（LCP）通过锁定，创造一个固定角结构提供角度稳定性螺钉实现它。板和螺钉的组合以构建稳定的固定取决于多种因素，如骨折和手术偏好的类型。最佳组合可以实现骨质工会方面提供最佳的结果。在这项研究中，只有一个用于使用LCP一个骨折固定构建体各骨片段螺钉螺钉放置的三种组合通过有限元法进行了分析。一个胫骨和腓骨的三维模型从计算机断层摄影图像数据组重建，以及斜形骨折在胫骨的中轴模拟。八孔LCP被横放在骨折线和三个螺丝位置进行了模拟。骨的性质与0.3 17GPa和泊松比刚度被分配，韧带被模拟为刚性连接，并且体重负荷相当于三次同样适用于胫骨平台。结果表明，螺钉最接近骨折侧的位置将提供更多stabiliy和更少的应力施加到植入物和断裂构建体本身。结果是唯一的模拟斜形骨折，并且也可以用同样的方法分析其他类型的骨折。

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