The Comparison of Biomechanical Changes between Spinous Process Osteotomy and Conventional Laminectomy

극돌기 절골술과 추궁판 절제술에 대한 생체역학적 비교

  • 강경탁 (연세대학교 대학원 기계공학과) ;
  • 전흥재 (연세대학교 기계공학과) ;
  • 손주현 (연세대학교 대학원 기계공학과) ;
  • 김호중 (연세대학교 의과대학 정형외과학 교실) ;
  • 문성환 (연세대학교 의과대학 정형외과학 교실) ;
  • 이환모 (연세대학교 의과대학 정형외과학 교실) ;
  • 김가연 (연세대학교 대학원 기계공학과)
  • Published : 2009.07.01


Previous studies have introduced the technique of spinous process osteotomy to decompress spinal stenosis, a procedure which aims to afford excellent visualization while minimizing destruction of tissues not directly involved in the pathologic process. However, biomechanically it has not been investigated whether the sacrifice of posterior spinous process might have potential risk of spinal instability or not, even though supra-spinous and inter-spinous ligaments are preserved. Therefore the aim of this study is to evaluate the biomechanical properties after spinous process osteotomy, using finite element analysis. The model of spinous process osteotomy exhibited no significant increase in disc stress or change in segmental range of motion. It is due to the fact that the instability of lumbar spine has been maintained by the two-types of ligaments compared with the prior surgical technique. Therefore, according to the finite element result on this study, this osotetomy was considered to be a clinically safe surgical procedure and could not cause the instability of the lumbar spine.


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