Biomechanical evaluation of a novel pedicle screw-based interspinous spacer: A finite element analysis

Hsin Chang Chen, Jia Lin Wu, Shou Chieh Huang, Zheng Cheng Zhong, Shiu Ling Chiu, Yu Shu Lai, Cheng Kung Cheng

研究成果: 雜誌貢獻文章

摘要

Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently. The range of motion (ROM) between each vertebrae, stiffness of the implanted level, the peak stress at the intervertebral discs, and the contact forces on spinous process were analyzed. Of all three devices, the Coflex-F™ provided the largest restrictions in extension, flexion and lateral bending. For intervertebral disc, the peak stress at the implanted segment decreased by 81% in the Coflex-F™, 60.2% in the M-Ti and 46.7% in the M-PEEK when compared to the intact model. For the adjacent segments, while the Coflex-F™ caused considerable increases in the ROM and disc stress, the M-PEEK only had small changes.
原文英語
頁(從 - 到)27-32
期刊Medical Engineering and Physics
46
DOIs
出版狀態接受/付印 - 八月 2017

指紋

Finite Element Analysis
Polyether ether ketones
Finite element method
Intervertebral Disc
Articular Range of Motion
Spine
Titanium alloys
Spinal Stenosis
Titanium
Stiffness
Pathologic Constriction
Equipment and Supplies
Pedicle Screws
polyetheretherketone
Experiments

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering

引用此文

Chen, H. C., Wu, J. L., Huang, S. C., Zhong, Z. C., Chiu, S. L., Lai, Y. S., & Cheng, C. K. (認可的出版社/出版中). Biomechanical evaluation of a novel pedicle screw-based interspinous spacer: A finite element analysis. Medical Engineering and Physics, 46, 27-32. https://doi.org/10.1016/j.medengphy.2017.05.004

Biomechanical evaluation of a novel pedicle screw-based interspinous spacer : A finite element analysis. / Chen, Hsin Chang; Wu, Jia Lin; Huang, Shou Chieh; Zhong, Zheng Cheng; Chiu, Shiu Ling; Lai, Yu Shu; Cheng, Cheng Kung.

於: Medical Engineering and Physics, 卷 46, 08.2017, p. 27-32.

研究成果: 雜誌貢獻文章

Chen, Hsin Chang ; Wu, Jia Lin ; Huang, Shou Chieh ; Zhong, Zheng Cheng ; Chiu, Shiu Ling ; Lai, Yu Shu ; Cheng, Cheng Kung. / Biomechanical evaluation of a novel pedicle screw-based interspinous spacer : A finite element analysis. 於: Medical Engineering and Physics. 2017 ; 卷 46. 頁 27-32.
@article{3c52522fddce4c7e877ea3a8d7c40a97,
title = "Biomechanical evaluation of a novel pedicle screw-based interspinous spacer: A finite element analysis",
abstract = "Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently. The range of motion (ROM) between each vertebrae, stiffness of the implanted level, the peak stress at the intervertebral discs, and the contact forces on spinous process were analyzed. Of all three devices, the Coflex-F™ provided the largest restrictions in extension, flexion and lateral bending. For intervertebral disc, the peak stress at the implanted segment decreased by 81{\%} in the Coflex-F™, 60.2{\%} in the M-Ti and 46.7{\%} in the M-PEEK when compared to the intact model. For the adjacent segments, while the Coflex-F™ caused considerable increases in the ROM and disc stress, the M-PEEK only had small changes.",
keywords = "Finite element method, Implant design, Interspinous spacer, Spine biomechanics",
author = "Chen, {Hsin Chang} and Wu, {Jia Lin} and Huang, {Shou Chieh} and Zhong, {Zheng Cheng} and Chiu, {Shiu Ling} and Lai, {Yu Shu} and Cheng, {Cheng Kung}",
year = "2017",
month = "8",
doi = "10.1016/j.medengphy.2017.05.004",
language = "English",
volume = "46",
pages = "27--32",
journal = "Medical Engineering and Physics",
issn = "1350-4533",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Biomechanical evaluation of a novel pedicle screw-based interspinous spacer

T2 - A finite element analysis

AU - Chen, Hsin Chang

AU - Wu, Jia Lin

AU - Huang, Shou Chieh

AU - Zhong, Zheng Cheng

AU - Chiu, Shiu Ling

AU - Lai, Yu Shu

AU - Cheng, Cheng Kung

PY - 2017/8

Y1 - 2017/8

N2 - Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently. The range of motion (ROM) between each vertebrae, stiffness of the implanted level, the peak stress at the intervertebral discs, and the contact forces on spinous process were analyzed. Of all three devices, the Coflex-F™ provided the largest restrictions in extension, flexion and lateral bending. For intervertebral disc, the peak stress at the implanted segment decreased by 81% in the Coflex-F™, 60.2% in the M-Ti and 46.7% in the M-PEEK when compared to the intact model. For the adjacent segments, while the Coflex-F™ caused considerable increases in the ROM and disc stress, the M-PEEK only had small changes.

AB - Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently. The range of motion (ROM) between each vertebrae, stiffness of the implanted level, the peak stress at the intervertebral discs, and the contact forces on spinous process were analyzed. Of all three devices, the Coflex-F™ provided the largest restrictions in extension, flexion and lateral bending. For intervertebral disc, the peak stress at the implanted segment decreased by 81% in the Coflex-F™, 60.2% in the M-Ti and 46.7% in the M-PEEK when compared to the intact model. For the adjacent segments, while the Coflex-F™ caused considerable increases in the ROM and disc stress, the M-PEEK only had small changes.

KW - Finite element method

KW - Implant design

KW - Interspinous spacer

KW - Spine biomechanics

UR - http://www.scopus.com/inward/record.url?scp=85020748430&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020748430&partnerID=8YFLogxK

U2 - 10.1016/j.medengphy.2017.05.004

DO - 10.1016/j.medengphy.2017.05.004

M3 - Article

C2 - 28622909

AN - SCOPUS:85020748430

VL - 46

SP - 27

EP - 32

JO - Medical Engineering and Physics

JF - Medical Engineering and Physics

SN - 1350-4533

ER -