Title: Biomechanical differences of Coflex-F and pedicle screw fixation combined with TLIF or ALIF - a finite element study
Authors: Lo, Cheng-Chan
Tsai, Kai-Jow
Zhong, Zheng-Cheng
Chen, Shih-Hao
Hung, Chinghua
Department of Mechanical Engineering
Keywords: interspinous spacer;pedicle screw fixation;transforaminal lumbar interbody fusion;anterior lumbar interbody fusion;finite element analysis;posterior instrumentations
Issue Date: 2011
Abstract: Lumbar interbody fusion is a common procedure for treating lower back pain related to degenerative disc diseases. The Coflex-F is a recently developed interspinous spacer, the makers of which claim that it can provide stabilisation similar to pedicle screw fixation. Therefore, this study compares the biomechanical behaviour of the Coflex-F device and pedicle screw fixation with transforaminal lumbar interbody fusion (TLIF) or anterior lumbar interbody fusion (ALIF) surgeries by using finite element analysis. The results show that the Coflex-F device combined with ALIF surgery can provide stability similar to the pedicle screw fixation combined with TLIF or ALIF surgery. Also, the posterior instrumentations (Coflex-F and pedicle screw fixation) combined with TLIF surgery had lower stability than when combined with ALIF surgery.
URI: http://hdl.handle.net/11536/15389
ISSN: 1025-5842
DOI: 10.1080/10255842.2010.501762
Volume: 14
Issue: 11
Begin Page: 947
End Page: 956
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