Biomechanical analysis of the anterior cervical fusion

P. Fernandes, P. Fernandes, J. Folgado and J. Levy Melancia

Computer Methods in Biomechanics and Biomedical Engineering, 2012, vol. 15, issue 12, 1337-1346

Abstract: This paper presents a biomechanical analysis of the cervical C5–C6 functional spine unit before and after the anterior cervical discectomy and fusion. The aim of this work is to study the influence of the medical procedure and its instrumentation on range of motion and stress distribution. First, a three-dimensional finite element model of the lower cervical spine is obtained from computed tomography images using a pipeline of image processing, geometric modelling and mesh generation software. Then, a finite element study of parameters' influence on motion and a stress analysis at physiological and different post-operative scenarios were made for the basic movements of the cervical spine. It was confirmed that the results were very sensitive to intervertebral disc properties. The insertion of an anterior cervical plate influenced the stress distribution at the vertebral level as well as in the bone graft. Additionally, stress values in the graft decreased when it is used together with a cage.

Date: 2012
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DOI: 10.1080/10255842.2011.597351

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