Decisive factor in increase of loading at adjacent segments after lumbar fusion: Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element

Joon Hee Park, Ho-Joong Kim, Kyoung Tak Kang, Ka Yeon Kim, Heoung Jae Chun, Seong Hwan Moon, Hwan Mo Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this study is to investigate the change in biomechanical milieu following removal of pedicle screws or removal of spinous process with posterior ligament complex in instrumented single level lumbar arthrodesis. We developed and validated a finite element model (FEM) of the intact lumbar spine (L2-4). Four scenarios of L3-4 lumbar fusion were simulated: posterolateral fusion (PLF) at L3-4 using pedicle screw system with preservation of PLC (Pp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system with preservation of PLC (Pp WoP), L3-4 using pedicle screw system without preservation PLC (Sp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system without preservation of PLC (Sp WoP). For these models, we investigated the range of motion and maximal Von mises stress of disc in all segments under various moments. All fusion models demonstrated increase in range of motion at adjacent segments compared to the intact model. For the four fusion models, the WiP model s P had the largest increase in range of motion at each adjacent segment. This study demonstrated that removal of pedicle screw system and preservation of PLC after complete lumbar spinal fusion could reduce the stress of adjacent segments synergistically and might have beneficial effects in preventing ASD.

Original languageEnglish
Title of host publicationFourth International Conference on Experimental Mechanics
DOIs
StatePublished - 1 Dec 2010
Event4th International Conference on Experimental Mechanics - Singapore, Singapore
Duration: 18 Nov 200920 Nov 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7522
ISSN (Print)0277-786X

Other

Other4th International Conference on Experimental Mechanics
CountrySingapore
CitySingapore
Period18/11/0920/11/09

Fingerprint

screws
Fusion
Fusion reactions
Adjacent
fusion
Programmable logic controllers
Finite Element
Preservation
Finite element method
Motion
Range of data
ligaments
spine
Model
Spine
Ligaments
Finite Element Model
Moment
moments
Scenarios

Keywords

  • Anulotomy
  • Finite element analysis
  • Posterior ligament complex
  • Spinous process osteotomy

Cite this

Park, J. H., Kim, H-J., Kang, K. T., Kim, K. Y., Chun, H. J., Moon, S. H., & Lee, H. M. (2010). Decisive factor in increase of loading at adjacent segments after lumbar fusion: Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element. In Fourth International Conference on Experimental Mechanics [75222R] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7522). https://doi.org/10.1117/12.851295
Park, Joon Hee ; Kim, Ho-Joong ; Kang, Kyoung Tak ; Kim, Ka Yeon ; Chun, Heoung Jae ; Moon, Seong Hwan ; Lee, Hwan Mo. / Decisive factor in increase of loading at adjacent segments after lumbar fusion : Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element. Fourth International Conference on Experimental Mechanics. 2010. (Proceedings of SPIE - The International Society for Optical Engineering).
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abstract = "The aim of this study is to investigate the change in biomechanical milieu following removal of pedicle screws or removal of spinous process with posterior ligament complex in instrumented single level lumbar arthrodesis. We developed and validated a finite element model (FEM) of the intact lumbar spine (L2-4). Four scenarios of L3-4 lumbar fusion were simulated: posterolateral fusion (PLF) at L3-4 using pedicle screw system with preservation of PLC (Pp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system with preservation of PLC (Pp WoP), L3-4 using pedicle screw system without preservation PLC (Sp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system without preservation of PLC (Sp WoP). For these models, we investigated the range of motion and maximal Von mises stress of disc in all segments under various moments. All fusion models demonstrated increase in range of motion at adjacent segments compared to the intact model. For the four fusion models, the WiP model s P had the largest increase in range of motion at each adjacent segment. This study demonstrated that removal of pedicle screw system and preservation of PLC after complete lumbar spinal fusion could reduce the stress of adjacent segments synergistically and might have beneficial effects in preventing ASD.",
keywords = "Anulotomy, Finite element analysis, Posterior ligament complex, Spinous process osteotomy",
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Park, JH, Kim, H-J, Kang, KT, Kim, KY, Chun, HJ, Moon, SH & Lee, HM 2010, Decisive factor in increase of loading at adjacent segments after lumbar fusion: Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element. in Fourth International Conference on Experimental Mechanics., 75222R, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7522, 4th International Conference on Experimental Mechanics, Singapore, Singapore, 18/11/09. https://doi.org/10.1117/12.851295

Decisive factor in increase of loading at adjacent segments after lumbar fusion : Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element. / Park, Joon Hee; Kim, Ho-Joong; Kang, Kyoung Tak; Kim, Ka Yeon; Chun, Heoung Jae; Moon, Seong Hwan; Lee, Hwan Mo.

Fourth International Conference on Experimental Mechanics. 2010. 75222R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7522).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - The aim of this study is to investigate the change in biomechanical milieu following removal of pedicle screws or removal of spinous process with posterior ligament complex in instrumented single level lumbar arthrodesis. We developed and validated a finite element model (FEM) of the intact lumbar spine (L2-4). Four scenarios of L3-4 lumbar fusion were simulated: posterolateral fusion (PLF) at L3-4 using pedicle screw system with preservation of PLC (Pp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system with preservation of PLC (Pp WoP), L3-4 using pedicle screw system without preservation PLC (Sp WiP), L3-4 lumbar posterolateral fusion state after removal of pedicle screw system without preservation of PLC (Sp WoP). For these models, we investigated the range of motion and maximal Von mises stress of disc in all segments under various moments. All fusion models demonstrated increase in range of motion at adjacent segments compared to the intact model. For the four fusion models, the WiP model s P had the largest increase in range of motion at each adjacent segment. This study demonstrated that removal of pedicle screw system and preservation of PLC after complete lumbar spinal fusion could reduce the stress of adjacent segments synergistically and might have beneficial effects in preventing ASD.

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M3 - Conference contribution

AN - SCOPUS:79958113615

SN - 9780819479129

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Fourth International Conference on Experimental Mechanics

ER -

Park JH, Kim H-J, Kang KT, Kim KY, Chun HJ, Moon SH et al. Decisive factor in increase of loading at adjacent segments after lumbar fusion: Operative technique, pedicle screws, or fusion itself. - Biomechanical analysis using finite element. In Fourth International Conference on Experimental Mechanics. 2010. 75222R. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.851295