髋臼部T形骨折四种不同内固定方式的生物力学有限元分析

发布时间：2019-05-27 13:05

【摘要】：目的髋臼部T形骨折解剖结构较为复杂,损伤机制多种多样,在临床治疗中难以制定统一的手术金标准。本文通过建立有效的髋臼部T形骨折有限元模型,比较四种不同内固定方式的生物力学稳定性之间的差别。方法利用有限元建模软件建立髋臼T形骨折模型后,应用相关有限元软件建立双柱逆行拉力螺钉(A)、前柱重建钢板联合后柱拉力螺钉(B)、后柱重建钢板联合前柱拉力螺钉(C)和双柱重建钢板(D)这4种不同内固定术后的模型,分别予以模拟站位和坐位并进行加载分析。结果分别在站位、坐位下,在加载方式相同的情况下髋臼T形骨折前后柱骨折线上最大位移及骨折线上节点位移均数表现为ABCD。结论应用双柱重建钢板内固定方式治疗髋臼T形骨折具有良好的生物力学稳定性,后柱重建钢板联合前柱拉力螺钉次之。
[Abstract]:Objective the anatomical structure of acetabular T-shaped fracture is complex and the injury mechanism is various, so it is difficult to establish a unified standard of surgical gold in clinical treatment. In this paper, an effective finite element model of acetabular T-shaped fracture was established to compare the biomechanical stability of four different internal fixation methods. Methods after the acetabular T-shaped fracture model was established by finite element modeling software, the double column retrograde tension screw (A), anterior column reconstruction plate combined with posterior column tension screw (B), was established by using the relevant finite element software. Four different internal fixation models, posterior column reconstruction plate combined with anterior column tension screw (C) and double column reconstruction plate (D), were used to simulate the position and sitting position, and the loading analysis was carried out. Results the maximum displacement of anterior and posterior column fractures and the average displacement of nodes on the fracture lines of acetabular T-shaped fractures were ABCD. under the same loading mode. Conclusion double column reconstruction plate internal fixation has good biomechanical stability in the treatment of acetabular T-shaped fracture, followed by posterior column reconstruction plate combined with anterior column tension screw.
【作者单位】：广州军区广州总医院;南方医科大学;
【基金】：广东省国家自然科学基金项目(S2012010009743) 广东省科技计划项目(2012B060100008) 广州市科技计划项目(20150430030440692)
【分类号】：R318.01;R683

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