Fan Yanping, Lei Jianyin, Liu Haibo, Li Zhiqiang, Cai Xianhua, Chen Weiyi
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2015 Oct;32(5):997-1003.
We developed a three-dimensional finite element model of the pelvis. According to Letournel methods, we established a pelvis model of T-shaped fracture with its three different fixation systems, i. e. double column reconstruction plates, anterior column plate combined with posterior column screws and anterior column plate combined with quadrilateral area screws. It was found that the pelvic model was effective and could be used to simulate the mechanical behavior of the pelvis. Three fixation systems had great therapeutic effect on the T-shaped fracture. All fixation systems could increase the stiffness of the model, decrease the stress concentration level and decrease the displacement difference along the fracture line. The quadrilateral area screws, which were drilled into cortical bone, could generate beneficial effect on the T-type fracture. Therefore, the third fixation system mentioned above (i. e. the anterior column plate combined with quadrilateral area screws) has the best biomechanical stability to the T-type fracture.
我们构建了骨盆的三维有限元模型。根据勒图尔内尔方法，我们建立了T形骨折的骨盆模型及其三种不同的固定系统，即双柱重建钢板、前柱钢板联合后柱螺钉以及前柱钢板联合四边形区域螺钉。结果发现，该骨盆模型是有效的，可用于模拟骨盆的力学行为。三种固定系统对T形骨折均有显著治疗效果。所有固定系统均可增加模型的刚度，降低应力集中水平，并减小骨折线处的位移差异。钻入皮质骨的四边形区域螺钉对T型骨折可产生有益作用。因此，上述第三种固定系统（即前柱钢板联合四边形区域螺钉）对T型骨折具有最佳的生物力学稳定性。
