Analysis of biomechanical changes after removal of instrumentation in lumbar arthrodesis by finite element analysis

Ho Joong Kim, Heoung Jae Chun, Seong Hwan Moon, Kyoung Tak Kang, Hak Sun Kim, Jin Oh Park, Eun Su Moon, Joon Seok Sohn, Hwan Mo Lee

研究成果: Article

22 引用 (Scopus)

抜粋

The purpose of this study is to investigate the change in biomechanical milieu following removal of pedicle screws in instrumented single level lumbar arthrodesis. Using a validated finite element (FE) model of the intact lumbar spine (L2-5), two scenarios of L3-4 lumbar fusion were simulated: posterolateral fusion (PLF) at L3-4 using pedicle screws (PLF with pedicle screws; WiP) and L3-4 lumbar posterolateral fusion state after removal of pedicle screws (PLF without pedicle screws; WoP). The WiP model had greater range of motion (ROM) at each adjacent segment than the WoP model. This phenomenon became pronounced at the proximal adjacent segment under flexion moment. Similarly, removal of pedicle screws (the WoP model) relieved the maximal von Mises stress at adjacent segments under 4 moments compared to the WiP model. This study demonstrated that removal of pedicle screws could decrease stiffness of fusion segments, which would reduce the disk stress of adjacent segments.

元の言語English
ページ(範囲)703-709
ページ数7
ジャーナルMedical and Biological Engineering and Computing
48
発行部数7
DOI
出版物ステータスPublished - 2010 7 1

ASJC Scopus subject areas

  • Biomedical Engineering
  • Computer Science Applications

フィンガープリント Analysis of biomechanical changes after removal of instrumentation in lumbar arthrodesis by finite element analysis' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Kim, H. J., Chun, H. J., Moon, S. H., Kang, K. T., Kim, H. S., Park, J. O., Moon, E. S., Sohn, J. S., & Lee, H. M. (2010). Analysis of biomechanical changes after removal of instrumentation in lumbar arthrodesis by finite element analysis. Medical and Biological Engineering and Computing, 48(7), 703-709. https://doi.org/10.1007/s11517-010-0621-2