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http://dx.doi.org/10.3795/KSME-A.2009.33.7.645

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

Kang, Kyoung-Tak (연세대학교 대학원 기계공학과)
Chun, Heoung-Jae (연세대학교 기계공학과)
Son, Ju-Hyun (연세대학교 대학원 기계공학과)
Kim, Ho-Joong (연세대학교 의과대학 정형외과학 교실)
Moon, Seong-Hwan (연세대학교 의과대학 정형외과학 교실)
Lee, Hwan-Mo (연세대학교 의과대학 정형외과학 교실)
Kim, Ka-Yeon (연세대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.7, 2009 , pp. 645-651 More about this Journal
Abstract
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.
Keywords
Finite Element Analysis; Osoteomic; Spine; Spinous;
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