ZHANG Zhenjun,LI Wenzhao,LI Hui,LIAO Zhenhua,MENG Qingzhu,SUN Dawei,SUN Xuejun,LIU Weiqiang.Biomechanical Properties of Porous Titanium Cages for Different Lumbar Interbody Fusion Surgeries[J].Journal of medical biomechanics,2019,34(3):243-250
多孔钛腰椎融合器在不同入路椎间融合术中的生物力学性能
Biomechanical Properties of Porous Titanium Cages for Different Lumbar Interbody Fusion Surgeries
Received:April 19, 2018  Revised:June 11, 2018
DOI:
Chinese key words:  多孔融合器  前路腰椎椎间融合术  后路腰椎椎间融合术  经椎间孔腰椎椎间融合术  直接外侧椎间融合术  生物力学
English Key words:porous cages  anterior lumbar interbody fusion (ALIF)  posterior lumbar interbody fusion (PLIF)  transforaminal lumbar interbody fusion (TLIF)  direct lateral interbody fusion (DLIF)  biomechanics
Fund project:国家重点研发计划课题(2016YFC1102002)
Author NameAffiliation
ZHANG Zhenjun Department of Mechanical Engineering, Tsinghua University
Laboratory of Biomedical Material and Implanted Devices, Shenzhen Institute of Tsinghua University 
LI Wenzhao Beijing Medical Implant Engineering Research Center, Naton Science and Technology Group 
LI Hui Beijing Medical Implant Engineering Research Center, Naton Science and Technology Group 
LIAO Zhenhua Laboratory of Biomedical Material and Implanted Devices, Shenzhen Institute of Tsinghua University 
MENG Qingzhu Haicheng City Central Hospital 
SUN Dawei Haicheng City Central Hospital 
SUN Xuejun Beijing Yingnuanlihe Technologies Co., Ltd. 
LIU Weiqiang Department of Mechanical Engineering, Tsinghua University
Laboratory of Biomedical Material and Implanted Devices, Shenzhen Institute of Tsinghua University 
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Chinese abstract:
      目的 探究采用多孔融合器在不同入路腰椎融合术的生物力学性能。方法 建立完整腰椎三维有限模型,通过实验方法 获得多孔材料的力学参数。针对多孔融合器在前路腰椎椎间融合术(anterior lumbar interbody fusion, ALIF)、后路腰椎椎间融合术(posterior lumbar interbody fusion, PLIF)、经椎间孔腰椎椎间融合术(transforaminal lumbar interbody fusion, TLIF)和直接外侧椎体间融合术(direct lateral interbody fusion, DLIF)中的生物力学性能进行对比研究。结果 在施行椎间融合术后,DLIF、ALIF模型预测的活动度(range of motion, ROM)和融合器应力明显低于PLIF、TLIF模型,DLIF、ALIF和TLIF模型预测的终板应力明显低于PILF模型。结论 采用多孔融合器的DLIF模型显示出较优的生物力学性能,而且在临床过程中操作简单适于微创术式。DLIF手术具有更优的综合性能。
English abstract:
      Objective To study the biomechanical properties of porous titanium cages used for different lumbar interbody fusion surgeries. Methods The three-dimensional (3D) finite element model of the lumbar spine was constructed, and mechanical parameters of porous materials were obtained by mechanical test. The biomechanical properties of porous titanium cages in anterior lumbar interbody fusion (ALIF), posterior lumbar interbody fusion (PLIF), transforaminal lumbar interbody fusion (TLIF), direct lateral interbody fusion (DLIF) were compared. Results After lumbar interbody surgery, the predicted range of motion (ROM) and the maximum stress in cage of DLIF model and ALIF model were substantially lower than those of PLIF model and TLIF model. The maximum stress in endplate of DLIF model, ALIF model and TLIF model were obviously lower than that of PLIF model. Conclusions DLIF with the porous cage showed advantages in biomechanical properties, which was simple to operate and suitable for minimally invasive surgery in clinical practice. DLIF performed the superior comprehensive properties.
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