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Extent and location of fixation affects the biomechanical stability of short- or long-segment pedicle screw technique with screwing of fractured vertebra for the treatment of thoracolumbar burst fractures An observational study using finite element analysis
Wang HW(王洪伟)1,2,3,4; Mo, Zhongjun5; Han JD(韩建达)2; Liu J(刘军)1; Li CQ(李长青)6; Zhou Y(周跃)6; Xiang LB(项良碧)1; Yang, Lei7
Department机器人学研究室
Corresponding AuthorWang, Hongwei(cplawhw@163.com) ; Yang, Lei(cplayss@163.com)
Source PublicationMEDICINE
ISSN0025-7974
2018
Volume97Issue:26Pages:1-6
Indexed BySCI
WOS IDWOS:000439552200052
Contribution Rank1
Funding OrganizationFoundation of the Liaoning Province Doctor Startup Fund [201601389] ; State Key Laboratory of Robotics [2017-O01] ; Open Project Program of the State Key Lab of CADCG [A1718] ; Open Project Program of the State Key Laboratory of Trauma, Burn and Combined Injury [SKLKF201705] ; State Key Laboratory of Materials Processing and Die & Mould Technology [P2018-011]
Keywordbiomechanics finite element analysis long-segment fixation monoaxial pedicle screw short-segment fixation thoracolumbar fracture
AbstractIntermediate screw fixation at the fracture level has been widely accepted to treat thoracolumbar burst fractures, but no study has shown the effect of the extent and location of fixation. The effect of the extent and location of fixation on short-or long-segment pedicle screw fixation through intermediate screw fixation at the fracture level in the treatment of thoracolumbar burst fractures is discussed. Posterior intermediate screw fixation techniques in treating T12 vertebral fracture models were simulated and compared using finite element methods; the fixation techniques included M3-L1 (bilateral 3 monoaxial pedicle screw fixation from L1 to T11), M3-L2, M4-L1 (bilateral 4 monoaxial pedicle screw fixation from L1 to T10), M4-L2, M4-L3, and M5-L2 (bilateral 5 monoaxial pedicle screw fixation from L2 to T10). Range of motion (ROM) and largest von Mises stress (LVMS) of the instrumentations were recorded and analyzed. No significant differences were observed in the mean ROM of all states of motion between the M3-L1 model and the other fixation models except for M5-L2. The LVMS of the pedicle screws and rods all occurred during flexion. The LVMS values of the pedicle screws were larger in the M3-L2 fixation model and M4-L3 fixation model than in the other fixation models. The M3-L1 model presented a significantly smaller mean LVMS of the pedicle screws in all states of motion than the M3-L2 model (P=.026). The LVMS values of the rods were larger in the M3-L2 fixation model, M4-L3 fixation model, and M4-L2 fixation model than in the other fixation models. No significant differences were observed in the mean LVMS of the rods in all states of motion among all the fixation models. When choosing short-segment pedicle screw fixation with the screwing of fractured vertebrae to treat thoracolumbar fractures, we suggest M3-L1 over M3-L2. More severe injuries can be considered to identify an alternative treatment to long-segment monoaxial pedicle fixation constructs such as the M4-L1 and M5-L2 techniques.
Language英语
WOS SubjectMedicine, General & Internal
WOS KeywordPOSTERIOR FIXATION ; LEVEL ; INSTRUMENTATION ; INCLUSION ; BONE
WOS Research AreaGeneral & Internal Medicine
Funding ProjectFoundation of the Liaoning Province Doctor Startup Fund[201601389] ; State Key Laboratory of Robotics[2017-O01] ; Open Project Program of the State Key Lab of CADCG[A1718] ; Open Project Program of the State Key Laboratory of Trauma, Burn and Combined Injury[SKLKF201705] ; State Key Laboratory of Materials Processing and Die & Mould Technology[P2018-011]
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Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/22345
Collection机器人学研究室
Corresponding AuthorWang HW(王洪伟); Yang, Lei
Affiliation1.Department of Orthopedics, General Hospital of Shenyang Military Area Command of Chinese PLA, Shenyang, Liaoning
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, Liaoning
3.State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, Hubei
4.State Key Laboratory of Trauma, Burn and Combined Injury, Third Military Medical University, Chongqing
5.National Research Center for Rehabilitation Aids, Beijing
6.Department of Orthopedics, Xinqiao Hospital, The Third Military Medical University, Chongqing
7.Department of Nutrition, General Hospital of Shenyang Military Area Command of Chinese PLA, Shenyang, Liaoning, China
Recommended Citation
GB/T 7714
Wang HW,Mo, Zhongjun,Han JD,et al. Extent and location of fixation affects the biomechanical stability of short- or long-segment pedicle screw technique with screwing of fractured vertebra for the treatment of thoracolumbar burst fractures An observational study using finite element analysis[J]. MEDICINE,2018,97(26):1-6.
APA Wang HW.,Mo, Zhongjun.,Han JD.,Liu J.,Li CQ.,...&Yang, Lei.(2018).Extent and location of fixation affects the biomechanical stability of short- or long-segment pedicle screw technique with screwing of fractured vertebra for the treatment of thoracolumbar burst fractures An observational study using finite element analysis.MEDICINE,97(26),1-6.
MLA Wang HW,et al."Extent and location of fixation affects the biomechanical stability of short- or long-segment pedicle screw technique with screwing of fractured vertebra for the treatment of thoracolumbar burst fractures An observational study using finite element analysis".MEDICINE 97.26(2018):1-6.
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