人体全骨盆三维有限元模型的建立与验证

目的建立人体全骨盆的三维有限元模型，提供骨盆生物力学研究的数学模型。方法获取正常成年男性全骨盆包括相邻自第3腰椎、股骨上端1／3处的CT扫描图像，运用ANSYS有限元分析系统，采用直接从原始图片生成单元和节点的方法构建人体全骨盆的三维有限元模型。结果建立了正常人体全骨盆并包含第3腰椎和股骨上1／3段的三维有限元模型，模型由721820单元，207248节点构成。结论建立的人体全骨盆三维有限元模型较客观地反映人体骨盆的解剖结构和力学特性，可作为骨盆生物力学研究的工具。

Development and validating of a three-dimensional finite element model of total human pelvis

OBJECTIVE: To develop a three-dimensional finite element model of normal total adult human pelvis and to establish a platform for biomechanical research of human pelvis. METHODS: 186 series of traverse CT images of the pelvis, from the third lumbar vertebra (L3) to the upper third of femur, obtained with spiral CT scanning on a healthy man, aged 42, without diseases of lumbar vertebrae and pelvis, were processed. A three-dimensional finite element model of pelvis was constructed directly by producing the units and nodes with the pixels of the original CT films, using ANSYS finite analytical system. RESULT: A three-dimensional finite element model of normal human pelvis was constructed including lumbar and proximal femur, which could be divided into 207,248 nodes and 721,820 units. CONCLUSION: The established three-dimensional finite element model of normal adult is valid and reasonable, and can be used for biomechanical analysis.