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[1]隋吉生,张绍东,吴小涛,等.微创经椎间孔腰椎间融合术的有限元分析[J].医学研究与战创伤救治(原医学研究生学报),2014,16(02):141-143，152.[doi:10.3969/j.issn.1672-271X.2014.02.009]
　SUI Ji-sheng,ZHANG Shao-dong,WU Xiao-tao,et al.Finite element analysis of transforaminal lumbar interbody fusion[J].JOURNAL OF MEDICALRESEARCH —COMBAT TRAUMA CARE,2014,16(02):141-143，152.[doi:10.3969/j.issn.1672-271X.2014.02.009]
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微创经椎间孔腰椎间融合术的有限元分析()
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《医学研究与战创伤救治》（原医学研究生学报）[ISSN:1672-271X/CN:32-1713/R]

卷:
第16卷
期数:
2014年02期
页码:
141-143，152
栏目:
出版日期:
2014-03-20

文章信息/Info

Title:
Finite element analysis of transforaminal lumbar interbody fusion
作者:
隋吉生1; 张绍东2; 吴小涛2; 王黎明1; 蒋纯志1
1.210006 江苏南京，南京市第一医院骨科;2.210009 江苏南京，东南大学附属中大医院骨科
Author(s):
SUI Ji-sheng1; ZHANG Shao-dong2; WU Xiao-tao2; WANG Li-ming1; JIANG Chun-zhi1.
1.Department of Orthopaedics,Nanjing First Hospital,Nanjing,Jiangsu 210006,China;2.Department of Orthopaedics,Zhongda Hospital,Nanjing,Jiangsu 210009,China
关键词:
有限元分析; 腰椎; 椎间融合; 生物力学
Keywords:
finite element analysis; lumbar spine; lumbar fusion; bio-mechanics
分类号:
R681.57
DOI:
10.3969/j.issn.1672-271X.2014.02.009
文献标志码:
A
摘要:
目的 建立微创经椎间孔腰椎融合的有限元模型，通过比较不同固定方式的生物力学特性，来探讨最适宜的固定融合方式。方法 分别建立以下融合固定模型:单枚融合器 ＋双侧椎弓根钉(A型)；双枚融合器＋双侧椎弓根钉(B型)；单枚融合器＋单侧椎弓根钉(C型)；双枚融合器＋单侧椎弓根钉(D型)。对各模型进行前屈、后伸、左屈、右屈、左旋、 右旋、轴压加载，比较各模型的角位移、椎弓根钉及融合器的所受应力情况。结果 各融合固定模型在不同工况下椎弓根钉及融合器所受应力的Von Mises峰值各有差异，但均在最 大受力范围之内。各工况下四种模型角位移均较有限元模型减少，A/B型、C/D型相比角位移减少程度相当，而单侧椎弓根钉固定时脊柱稳定性较双侧椎弓根钉固定差。结论 建立了 不同固定方式的腰椎融合模型，验证了在微创经椎间孔腰椎融合术中使用单侧椎弓根螺钉加单枚融合器置入可提供适当的稳定，可以作为微创经椎间孔腰椎间融合术的固定方法选 择。
Abstract:
Objective To develop and validate three-dimensional finite element models of transforaminal lumbar interbody fusion,and explore the most appropriate method of fixation and fusion by comparing biomechanical characteristics of fixation method.Methods Developing four fusion models:bilateral pedicle screws fixation with a single cage insertion model(A);bilateral pedicle screws fixation with two cages insertion model(B);unilateral pedicle screws fixation with a single cage insertion model(C);unilateral pedicle screws fixation with two cages insertion model(D),the models were subjected to different forces including axial compressive,anterior bending,posterior extension,left bending and rotation.The von Mises stress of the fusion segments on the pedicle screw and cages were recorded.Results There were differences in Von Mises peak stress between four models,but were within the range of maximum force.The angular variation in A,B,C and D decreased significantly compared with normal.There was no significant differences in angular variation between A and B,C and D.Bilateral pedicle screws fixation had more superior biomechanics than unilateral pedicle screws fixation.Conclusion The lumbar interbody fusion models were established using varying fixation methods,and the results verified that unilateral pedicle screws fixation with a single cage could meet the demand in transforaminal single segment interbody fusion.

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备注/Memo

备注/Memo:
南京市医学科技发展项目(QYK10134)
更新日期/Last Update: 2014-03-20