| 股骨头缺血性坏死骨瓣移植过程的有限元模拟 |
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| 引用本文： | 连志强,赵德伟,张洪武,王卫民. 股骨头缺血性坏死骨瓣移植过程的有限元模拟[J]. 生物医学工程学杂志, 2008, 25(5) |
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| 作者姓名： | 连志强 赵德伟 张洪武 王卫民 |
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| 作者单位： | 1. 大连理工大学,工程力学系,工业装备结构分析国家重点实验室,大连,116023
2. 大连大学,附属中山医院,骨科,大连,116001 |
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| 基金项目： | 国家自然科学基金资助项目(10402007,14021202) |
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| 摘 要： | 基于临床上的一例股骨头三期缺血性坏死患者的单侧CT图像数据，建立了股骨近端的三维有限元模型，包括：正常模型、坏死模型和修复模型。并基于医学OF图像数据，分别对三种有限元模型赋予材料性质。最后应用有限元软件，对股骨头缺血性坏死骨瓣移植手术过程进行了数值模拟。分析结果表明，切除掉坏死区域后，股骨头近端的位移及应力值均增加较大，而采用骨瓣移植手术，可以有效地减少股骨近端的位移及应力值，使其更接近正常状态。说明了该手术方法安全可靠并行之有效。
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| 关 键 词： | 股骨头缺血性坏死 骨瓣移植 有限元模拟 材料分配 |
Finite Element Simulation of Bone Grafting Process for Avascular Necrosis of Femoral Head |
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| Lian Zhiqiang,Zhao Dewei,Zhang Hongwu,Wang Weiming. Finite Element Simulation of Bone Grafting Process for Avascular Necrosis of Femoral Head[J]. Journal of biomedical engineering, 2008, 25(5) |
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| Authors: | Lian Zhiqiang Zhao Dewei Zhang Hongwu Wang Weiming |
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| Affiliation: | State Key Laboratory of Structural Analysis for Industrial Equipment;Department of Engineering Mechanics;Dalian University of Technology;Dalian 116023;China;Department of Orthopaedics;Zhongshan Hospital of Dalian University;Dalian 116001;China |
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| Abstract: | Based on the unilateral CT images of a clinical patient in stage III for avascular necrosis of femoral head, three-dimensional finite element models of proximal femur are established, including normal model, necrosis model and prothetic model. Based on the same set of CT images, the material properties are assigned to the three finite element models respectively. Finally, the process of bone grafting for avascular necrosis of femoral head is simulated with finite element analysis. The results indicate that ... |
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