[1]权祯,张晓刚,秦大平,等.基于CT影像的骨质疏松性胸腰椎压缩骨折PKP术后三维有限元力学模型的建立与验证[J].中国医学物理学杂志,2021,38(3):360-369.[doi:DOI:10.3969/j.issn.1005-202X.2021.03.018]
　QUAN Zhen,ZHANG Xiaogang,QIN Daping,et al.CT image-based establishment and verification of three-dimensional finite element biomechanical model for osteoporotic thoracolumbar compression fracture after percutaneous kyphoplasty[J].Chinese Journal of Medical Physics,2021,38(3):360-369.[doi:DOI:10.3969/j.issn.1005-202X.2021.03.018]
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基于CT影像的骨质疏松性胸腰椎压缩骨折PKP术后三维有限元力学模型的建立与验证()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
38卷
期数:
2021年第3期
页码:
360-369
栏目:
生物材料与力学
出版日期:
2021-03-30

文章信息/Info

Title:
CT image-based establishment and verification of three-dimensional finite element biomechanical model for osteoporotic thoracolumbar compression fracture after percutaneous kyphoplasty
文章编号:
1005-202X（2021）03-0360-10
作者:
权祯1; 张晓刚1; 2; 秦大平1; 2; 宋敏1; 2; 张华2; 张宏伟2; 赵希云2; 王志鹏2; 马涛1; 陈钵1
1.甘肃中医药大学中医临床学院， 甘肃 兰州 730000； 2.甘肃中医药大学附属医院脊柱外科， 甘肃 兰州 730020
Author(s):
QUAN Zhen1;  ZHANG Xiaogang1;  2;  QIN Daping1;  2;  SONG Min1;  2;  ZHANG Hua2;  ZHANG Hongwei2;  ZHAO Xiyun2;  WANG Zhipeng2;  MA Tao1;  CHEN Bo1
1. Clinical College of Traditional Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou 730000, China 2. Department of Spinal Surgery, Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou 730020, China
关键词:
骨质疏松性胸腰椎压缩骨折; 三维有限元; 生物力学模型; 建立与验证
Keywords:
Keywords: osteoporotic thoracolumbar compression fracture three-dimensional finite element biomechanical model establishment and verification
分类号:
R318
DOI:
DOI:10.3969/j.issn.1005-202X.2021.03.018
文献标志码:
A
摘要:
目的：建立胸腰椎（T11-L2节段）的三维有限元模型，并验证其生物力学分析有效性。方法：筛选1名T12椎体骨质疏松性压缩骨折的志愿者为建模对象，利用64排螺旋CT进行连续性扫描，扫描区域为脊柱胸腰段T11-L2节段。将CT数据读盘为DICOM格式，导入Mimics 19.0软件进行原始模型的提取与转化；Geomagic Warp 2017软件进行特征去除、光顺、曲面实体拟合；Solidworks 2017软件进行零件结构的组装与附属结构生成；Ansys Workbench 17.0软件添加材料属性、边界条件、坐标及载荷设定及生物力学分析。结果：成功建立了T12椎体压缩骨折T11-L2节段的经皮椎体后凸成形术（PKP）术后三维有限元模型，并测得其前屈、后伸、左侧弯、右侧弯、左旋转、右旋转时的角位移分别为8.3°、3.8°、7.8°、7.6°、3.7°、4.0°，与以往力学实验验证结果位移趋势一致。结论：基于有限元建模软件能成功建立骨质疏松性椎体压缩骨折PKP术后有限元数字模型，有效性验证合格，所建模型可靠，具备生物力学测试性能。
Abstract:
Abstract: Objective To establish a three-dimensional finite element model of thoracolumbar spine (T11-L2) and to verify its validity in biomechanical analysis. Methods A volunteer with osteoporotic compression fracture of T12 vertebral body was selected as the modeling object, and 64-slice spiral CT was used for continuous scan, with the thoracolumbar spine T11-L2 as the scanning area. The CT data in DICOM format were imported into Mimics 19.0 software for extracting and transforming the original model. Moreover, Geomagic Warp 2017 software was used for feature removal, smoothing, curved surface entity fitting Solidworks 2017 software for parts assembly and subsidiary structure generation and Ansys Workbench 17.0 software for the additions of material properties and boundary conditions, coordinate and load setting, and biomechanical analysis. Results A three-dimensional finite element model of the compression fracture segment (T11-L2) of T12 vertebral body was successfully established, and the angular displacements of the anterior flexion, posterior extension, left flexion, right flexion, left rotation and right rotation were measured as 8.3°, 3.8°, 7.8°, 7.6°, 3.7° and 4.0°, respectively, which were consistent with the displacement trend verified by previous mechanical experiments. Conclusion The finite element digital model of osteoporotic vertebral compression fracture after percutaneous kyphoplasty can be successfully established based on the finite element modeling software. The established model is proved to be qualified in validity verification and reliable, with biomechanical performances.

相似文献/References:

[1]戚琳,唐晶华,赵震锦,等.前方牵引联合腭部扩弓对颅面骨缝应力分布的三维有限元研究[J].中国医学物理学杂志,2013,30(01):3933.[doi:10.3969/j.issn.1005-202X.2013.01.024]

备注/Memo

备注/Memo:
【收稿日期】2020-10-12 【基金项目】国家自然科学基金（81760873）；甘肃省高等学校创新基金（2020A-073）；甘肃中医药大学附属医院青年创新基金（gzfy-2018-11） 【作者简介】权祯，研究生在读，主要研究方向：骨科内固定器械的有限元生物力学，E-mail: 1242278783@qq.com 【通信作者】秦大平，副教授，医学博士，研究方向：外用药及外固定器械对骨伤科疾病的研究及治疗，E-mail: qindaping888666@163.com
更新日期/Last Update: 2021-03-30