Biomechanical Properties of Porous Titanium Cages for Different Lumbar Interbody Fusion Surgeries

Zhenjun Zhang; Wenzhao LI; Hui LI; Zhenhua Liao; Qingzhu Meng; Dawei Sun; Xuejun Sun; Weiqiang Liu

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Biomechanical Properties of Porous Titanium Cages for Different Lumbar Interbody Fusion Surgeries

VernacularTitle: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
Author: Zhenjun ZHANG ^{1
,

2} ; Wenzhao LI ³ ; Hui LI ³ ; Zhenhua LIAO ² ; Qingzhu MENG ⁴ ; Dawei SUN ⁴ ; Xuejun SUN ⁵ ; Weiqiang LIU ^{1
,

2}
Author Information

1. Department of Mechanical Engineering, Tsinghua University
2. Laboratory of Biomedical Material and Implanted Devices, Shenzhen Institute of Tsinghua University
3. Beijing Medical Implant Engineering Research Center, Naton Science and Technology Group
4. Haicheng City Central Hospital
5. Beijing Yingnuanlihe Technologies Co., Ltd.
Publication Type:Journal Article
Keywords: porous cages; anterior lumbar interbody fusion (ALIF); posterior lumbar interbody fusion (PLIF); transforaminal lumbar interbody fusion (TLIF); direct lateral interbody fusion (DLIF); biomechanics
From: Journal of Medical Biomechanics 2019;34(3):E243-E250
CountryChina
Language:Chinese
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.