標題: Biomechanical effect after Coflex and Coflex rivet implantation for segmental instability at surgical and adjacent segments: a finite element analysis
作者: Lo, Cheng-Chan
Tsai, Kai-Jow
Chen, Shih-Hao
Zhong, Zheng-Cheng
Hung, Chinghua
機械工程學系
Department of Mechanical Engineering
關鍵字: lumbar spinal stenosis;interspinous process device;Coflex rivet follower load;disc annulus stress;finite element analysis
公開日期: 2011
摘要: The Coflex device may provide stability to the surgical segment in extension but does not restore stability in other motion. Recently, a modified version called the Coflex rivet has been developed. The effects of Coflex and Coflex rivet implantation on the adjacent segments are still not clear; therefore, the purpose of this study was to investigate the biomechanical differences between Coflex and Coflex rivet implantation by using finite element analyses. The results show that the Coflex implantation can provide stability in extension, lateral bending, and axial rotation at the surgical segment, and it had no influence at adjacent segments except for extension. The Coflex rivet implantation can provide stability in all motions and reduce disc annulus stress at the surgical segment. Therefore, the higher range of motion and stress induced by the Coflex rivet at both adjacent discs may result in adjacent segment degeneration in flexion and extension.
URI: http://hdl.handle.net/11536/15390
http://dx.doi.org/10.1080/10255842.2010.502894
ISSN: 1025-5842
DOI: 10.1080/10255842.2010.502894
期刊: COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
Volume: 14
Issue: 11
起始頁: 969
結束頁: 978
顯示於類別:期刊論文


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  1. 000299434200005.pdf