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Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method

OBJECTIVE: To investigate the biomechanical effects of a newly proposed Interspinous Process Compressor (IPC) and compare with pedicle screw fixation at surgical and adjacent levels of lumbar spine. METHODS: A three dimensional finite element model of intact lumbar spine was constructed and two spin...

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Autores principales: Choi, Jisoo, Kim, Sohee, Shin, Dong-Ah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Neurosurgical Society 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4783490/
https://www.ncbi.nlm.nih.gov/pubmed/26962413
http://dx.doi.org/10.3340/jkns.2016.59.2.91
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author Choi, Jisoo
Kim, Sohee
Shin, Dong-Ah
author_facet Choi, Jisoo
Kim, Sohee
Shin, Dong-Ah
author_sort Choi, Jisoo
collection PubMed
description OBJECTIVE: To investigate the biomechanical effects of a newly proposed Interspinous Process Compressor (IPC) and compare with pedicle screw fixation at surgical and adjacent levels of lumbar spine. METHODS: A three dimensional finite element model of intact lumbar spine was constructed and two spinal fusion models using pedicle screw fixation system and a new type of interspinous devices, IPC, were developed. The biomechanical effects such as range of motion (ROM) and facet contact force were analyzed at surgical level (L3/4) and adjacent levels (L2/3, L4/5). In addition, the stress in adjacent intervertebral discs (D2, D4) was investigated. RESULTS: The entire results show biomechanical parameters such as ROM, facet contact force, and stress in adjacent intervertebral discs were similar between PLIF and IPC models in all motions based on the assumption that the implants were perfectly fused with the spine. CONCLUSION: The newly proposed fusion device, IPC, had similar fusion effect at surgical level, and biomechanical effects at adjacent levels were also similar with those of pedicle screw fixation system. However, for clinical applications, real fusion effect between spinous process and hooks, duration of fusion, and influence on spinous process need to be investigated through clinical study.
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spelling pubmed-47834902016-03-09 Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method Choi, Jisoo Kim, Sohee Shin, Dong-Ah J Korean Neurosurg Soc Laboratory Investigation OBJECTIVE: To investigate the biomechanical effects of a newly proposed Interspinous Process Compressor (IPC) and compare with pedicle screw fixation at surgical and adjacent levels of lumbar spine. METHODS: A three dimensional finite element model of intact lumbar spine was constructed and two spinal fusion models using pedicle screw fixation system and a new type of interspinous devices, IPC, were developed. The biomechanical effects such as range of motion (ROM) and facet contact force were analyzed at surgical level (L3/4) and adjacent levels (L2/3, L4/5). In addition, the stress in adjacent intervertebral discs (D2, D4) was investigated. RESULTS: The entire results show biomechanical parameters such as ROM, facet contact force, and stress in adjacent intervertebral discs were similar between PLIF and IPC models in all motions based on the assumption that the implants were perfectly fused with the spine. CONCLUSION: The newly proposed fusion device, IPC, had similar fusion effect at surgical level, and biomechanical effects at adjacent levels were also similar with those of pedicle screw fixation system. However, for clinical applications, real fusion effect between spinous process and hooks, duration of fusion, and influence on spinous process need to be investigated through clinical study. The Korean Neurosurgical Society 2016-03 2016-02-29 /pmc/articles/PMC4783490/ /pubmed/26962413 http://dx.doi.org/10.3340/jkns.2016.59.2.91 Text en Copyright © 2016 The Korean Neurosurgical Society http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Laboratory Investigation
Choi, Jisoo
Kim, Sohee
Shin, Dong-Ah
Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title_full Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title_fullStr Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title_full_unstemmed Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title_short Biomechanical Comparison of Spinal Fusion Methods Using Interspinous Process Compressor and Pedicle Screw Fixation System Based on Finite Element Method
title_sort biomechanical comparison of spinal fusion methods using interspinous process compressor and pedicle screw fixation system based on finite element method
topic Laboratory Investigation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4783490/
https://www.ncbi.nlm.nih.gov/pubmed/26962413
http://dx.doi.org/10.3340/jkns.2016.59.2.91
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AT shindongah biomechanicalcomparisonofspinalfusionmethodsusinginterspinousprocesscompressorandpediclescrewfixationsystembasedonfiniteelementmethod