Biomechanical differences of Coflex-F and pedicle screw fixation combined with TLIF or ALIF–a finite element study

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

Keywords : analysis,Back Pain,Biomechanical Phenomena,Bone Screws,Finite Element Analysis,Humans,instrumentation,Low Back Pain,Lumbar Vertebrae,Models,Anatomic,Pain,Spinal Fusion,surgery,, Differences,Coflexf,Pedicle, lower back massage near me

Date of Publication : 2011 Nov

Authors : Lo CC;Tsai KJ;Zhong ZC;Chen SH;Hung C;

Organisation : Department of Mechanical Engineering, National Chiao Tung University, Hsinchu, Taiwan

Journal of Publication : Comput Methods Biomech Biomed Engin

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21416412

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