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Comparison of the biomechanical performance of three spinal implants for treating the wedge-shaped burst fractures

Medicine in Novel Technology and Devices 2022年第1期13卷 71-78页

作者： Tingxiang Gong Yongtao Lu Liangliang Cheng Department of Engineering Mechanics Dalian University of TechnologyDalianChina DUT-BSU Joint Institute Dalian University of TechnologyNo.2 Linggong Road116024DalianChina Affiliated Zhongshan Hospital of Dalian University DalianChina

Spinal fracture is a serious problem impairing life quality,associating with low back pain and many other chronic *** all the spinal fractures,the rate of thoracolumbar fractures is the highest and accounts for approximately 90%.Although surgical treatment is an effective approach,it is still unclear which treatment method performs the *** aim of the present study was to investigate the biomechanical performance of three spinal implants for treating the thoracolumbar wedge-shaped burst fractures using the finite element(FE)*** model of the T12/L1/L2 spinal segment was created from CT images and the thoracolumbar wedge-shaped burst fractures were created by removing some elements in the anterior part of *** FE models of the traditional system,the universal spine system(USS)and the cortical bone trajectory(CBT)system were created and their biomechanical performances were *** results revealed that among the three fixation systems,the highest von-Mises stress occurred in the CBT *** all the loading scenarios except for the lateral bending,the maximal von-Mises stress was higher when the USS system rather than the traditional system was *** average displacement around the fracture site was the highest in the CBT *** for the lateral bending,the average displacement around the fracture site was higher when the USS system rather than the traditional system was *** all the fixation approaches,the highest von-Mises stress always occurred at the screw *** present study provided important data for the treatment of thoracolumbar wedge-shaped burst *** example,the traditional spinal system is preferentially selected for the thoracolumbar wedgeshaped burst fracture of L1.

关键词： Spinal fracture fixation implant Finite element Biomechanical performance Stress analysis

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