摘要
背景:近年来,采用有限元分析法进行膝关节生物力学分析在国外发展迅速,但在国内,关于膝关节的三维有限元分析较少,且建模简单,相对粗糙,目前尚未有文献报道包括半月板、关节软骨及全部韧带等在内的完整膝关节的精细三维有限元模型。目的:建立完整的膝关节三维有限元模型。方法:获取正常膝关节SCT扫描图像数据,使用Mimics、3ds Max、ANSYS等软件建立膝关节三维有限元模型并进行初步的生物力学分析,以验证模型的有效性。结果与结论:建立的膝关节三维有限元模型具有良好的生物形态,外形与实体标本一致性高。进行生物力学分析结果显示前交叉韧带承受前向载荷最大;轴向负荷中,内侧间室负荷较外侧间室大;胫腓骨前向移动4.9mm。实验初步表明采用CT扫描资料建立三维有限元模型切实可行,特别适用于骨科领域三维有限元模型的建立。
BACKGROUND：Finite element analysis has been frequently used for knee joint biomechanics at abroad. However,there are domestic three-dimensional finite element analyses in China,and the model is simple and rough. There is no report about three-dimensional finite element model of intact knee joint including meniscus,articular cartilage and ligaments. OBJECTIVE：To establish a three-dimensional finite element model of intact knee joint. METHODS：SCT scanning data of normal knee joint were used to establish intact three-dimensional finite model of knee joint using Mimics,3ds Max and ANSYS software. Biomechanics of the knee joint model was analyzed to verify the validity of the model. RESULTS AND CONCLUSION：An intact three-dimensional finite element model of knee joint was established successfully,and the model provides a precise anatomic morphology of the knee joint. The finite element analysis of the model demonstrated that the forward loading mainly distributed at the anterior cruciate ligament,medial mesooecium bear larger axial loading than lateral mesooecium; the tibiofibula shifted forward for 4.9 mm. Results primarily show that it is reliable and accurate to build three-dimensional finite element models with CT scan data,which is appropriate to establish the three-dimensional finite element model in orthopedics.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2010年第52期9702-9705,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
基金
山东省自然科学基金(Y2008C20)
课题名称:膝关节三维有限元模型的建立及生物力学分析~~
