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Biomechanical comparison of posterior intermediate screw fixation techniques with hybrid monoaxial and polyaxial pedicle screws in the treatment of thoracolumbar burst fracture: a finite element study
Liu, Huan1; Wang HW(王洪伟)2,3,4,5; Liu J(刘军)2; Li CQ(李长青)6; Zhou Y(周跃)6; Xiang LB(项良碧)2
Department机器人学研究室
Source PublicationJOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
ISSN1749-799X
2019
Volume14Pages:1-8
Indexed BySCI
WOS IDWOS:000467547000002
Contribution Rank2
Funding OrganizationFoundation of the Sichuan Province Applied Basic Research ; Liaoning Province Doctor Startup Fund ; State Key Laboratory of Robotics ; Open Project Program of the State Key Lab of CAD CG ; Open Project Program of the State Key Laboratory of Trauma, Burn and Combined Injury ; National Natural Science Foundation of China ; State Key Laboratory of Materials Processing and Die & Mould Technology
KeywordBiomechanics Thoracolumbar fracture Hybrid Monoaxial pedicle screw Polyaxial pedicle screw
AbstractBackgroundTo compare the biomechanical characteristics of different posterior intermediate screw fixation techniques (ISFTs) with hybrid monoaxial pedicle screws (Mps) and polyaxial pedicle screws (Pps) used in thoracolumbar burst fractures.MethodsFixation techniques are compared with regard to the von Mises stress (VMS) of the instrumentations and intradiscal pressures (IDPs) of the adjacent segments by finite element method (FEM).ResultsThe redistributed ROM of the fixation models with Pps fixed at the lowest segment was twice of the other fixation models in flexion and extension. The largest value of maximal VMS of a pedicle screw was located at the lowest pedicle screws when Mps are fixed at the lowest segment. The largest value of maximal VMS of the rods was decreased when more Pps are fixed at the models. Maximal IDPs of the upper adjacent segments were all larger than those of the lower adjacent segments. The maximal IDPs of the fixation model with MPs fixed at the lowest segment were larger than the other fixation models in flexion and extension.ConclusionsPolyaxial pedicle screws could be placed at the upper or the median segment for the facilitated efficient application of the connecting rod. We should focus on the adjacent segmental degeneration especially the upper adjacent segment in the fixation model with Mps fixed at the lowest segment.
Language英语
WOS SubjectOrthopedics
WOS KeywordINTERBODY FUSION ; LEVEL ; ADJACENT ; INSTRUMENTATION ; VERTEBRA ; INCLUSION ; REDUCTION ; SEGMENTS ; HEIGHT
WOS Research AreaOrthopedics
Funding ProjectState Key Laboratory of Materials Processing and Die & Mould Technology[P2018-011] ; National Natural Science Foundation of China[11602063] ; Open Project Program of the State Key Laboratory of Trauma, Burn and Combined Injury[SKLKF201705] ; Open Project Program of the State Key Lab of CAD CG[A1718] ; State Key Laboratory of Robotics[2017-O01] ; Liaoning Province Doctor Startup Fund[201601389] ; Foundation of the Sichuan Province Applied Basic Research[2018JY0402] ; Foundation of the Sichuan Province Applied Basic Research[2018JY0402] ; Liaoning Province Doctor Startup Fund[201601389] ; State Key Laboratory of Robotics[2017-O01] ; Open Project Program of the State Key Lab of CAD CG[A1718] ; Open Project Program of the State Key Laboratory of Trauma, Burn and Combined Injury[SKLKF201705] ; National Natural Science Foundation of China[11602063] ; 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/173321/24728
Collection机器人学研究室
Corresponding AuthorWang HW(王洪伟)
Affiliation1.Department of Orthopedics, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000 China
2.Department of Orthopedics, General Hospital of Northern Theater Command of Chinese PLA, Shenyang, 110016 Liaoning China
3.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, 110016 Liaoning China
4.State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074 Hubei China
5.State Key Laboratory of Trauma, Burn and Combined Injury, The Third Military Medical University, Chongqing, 400038 China
6.Department of Orthopedics, Xinqiao Hospital, The Third Military Medical University, Chongqing, 400037 China
Recommended Citation
GB/T 7714
Liu, Huan,Wang HW,Liu J,et al. Biomechanical comparison of posterior intermediate screw fixation techniques with hybrid monoaxial and polyaxial pedicle screws in the treatment of thoracolumbar burst fracture: a finite element study[J]. JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH,2019,14:1-8.
APA Liu, Huan,Wang HW,Liu J,Li CQ,Zhou Y,&Xiang LB.(2019).Biomechanical comparison of posterior intermediate screw fixation techniques with hybrid monoaxial and polyaxial pedicle screws in the treatment of thoracolumbar burst fracture: a finite element study.JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH,14,1-8.
MLA Liu, Huan,et al."Biomechanical comparison of posterior intermediate screw fixation techniques with hybrid monoaxial and polyaxial pedicle screws in the treatment of thoracolumbar burst fracture: a finite element study".JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH 14(2019):1-8.
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