摘要
为了研究人体脊椎腰骶关节的生物力学特性,本研究利用三维激光扫描技术测量了人体脊柱骨骼样品的外形结构,然后根据所测的点云坐标数据建立了一个详细的人体腰骶关节L5-S1的三维非线性有限元模型。同时利用可获得的实验研究结果对该模型进行了有效性验证。结果表明,在10Nm力矩作用下,有限元模型的前俯、后仰、左侧弯、右侧弯、轴向左回转和轴向右回转的变形角度分别为9.11°、7.33°、4.95°、5.35°、2.92°、3.03°。该有限元模型的建立为人体脊柱腰骶关节的生物力学分析及器械植入研究提供了更为详细准确的计算模型。
To investigate the biomechanics of the lumbosacral joint of human spine, three-dimensional laser scanning technology was employed to measure the vertebral sample of spine, and a detailed three-dimensional nonlinear finite element model of the lumbosacral joint L5-S1 of the spine was established based on the coordinate data obtained. The finite element model was proved validated according to the available experimental results. The results show that the rotational angles of the finite element model under 10Nm moment were 9.11°, 7.33°, 4.95°, 5.35°, 2.92°, 3.03° for flexion, extension, left bending, right bending, left axial torsion and right axial torsion, respectively. The proposed model provided a more detailed and accurate computational model for the biomeehanieal analysis of lumbosaeral joint and the study of instrument implant.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2006年第4期426-429,共4页
Chinese Journal of Biomedical Engineering
基金
教育部留学回国人员基金资助项目
关键词
人体脊椎
有限元建模
激光扫描
小关节
非线性
human spine
finite element modeling
biomechanics
laser scanning
facet joints
nonlinear
