대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제30권12호
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  • Pages.1509-1517
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  • 2006
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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요추부 극돌기간 고정기구의 생체역학적 해석과 소형화 및 유연성 향상 설계

Biomechanical Analysis of Lumbar Interspinous Process Fixators and Design of Miniaturization and Advanced Flexibility

  • 박정홍 (부산대학교 기계기술연구소) ;
  • 허순 (부산대학교 기계설계대학원) ;
  • 이성재 (인제대학교 의생명공학대학) ;
  • 손권 (부산대학교 기계기술연구소)
  • 발행 : 2006.12.01
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초록

The intervertebral fusion was reported to increase the degeneration of the neighboring region. Recently, a new technique of inserting an interspinous process fixator has been introduced to minimize the degenerative change in the lumbar spine. This study analyzed biomechanical effects of the fixator in the lumbar spine, and designed a new prototype to improve flexibility of the fixator with a reduced size. The evaluation was based on the displacement, stiffness and von-Mises stress obtained from the mechanical test and finite element analysis. A finite element lumbar model of L1 to L5 was constructed. The finite element model was used to analyze intervertebral fusion, insertion of a commercial fixator and a new prototype. The range of motion of intervertebral segments and pressures at vertebral discs were calculated from FEA. The results showed that the stiffness of the prototype was reduced by 32.9% than that of the commercial one.

키워드

참고문헌

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피인용 문헌

  1. Biomechanical Analysis of a Combined Interspinous Spacer with a Posterior Lumbar Fusion with Pedicle Screws vol.36, pp.6, 2015, https://doi.org/10.9718/JBER.2015.36.6.276
  2. Mechanical Evaluation of Posterior Dynamic Omega-wire Stabilization System vol.36, pp.11, 2012, https://doi.org/10.3795/KSME-B.2012.36.11.1099