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Parametric and Structural Analysis of Dynamic Anterior Cervical Biomaterial Plate Implant by Computer Aided Virtual Engineering

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The main objective of this study was to examine the convenience of an accurate model of placement of dynamic anterior cervical plate, made of poly (methl-methacrylate) biomaterial, for testing spinal implants, and to determine the maximum fatigue values of differently surfaced Ti-5Al-2.55n spinal screw-rods, by finite element modeling. Anterior cervical biomaterial plates reduce the hazard for spinal cord injury and provide outstanding fixation for the anterior column to stop the relocation and slackening of screws-rods, using a cross-split screw crown that may be fastened into the biomaterial plate. This article reports about the hollow Ti-5Al-2.55n screw and cervical biomaterial plate system. The flexion movement of the spine implant was modeled, using finite elements method, to control the stresses and strains of the bone and screw interfaces to external forces, as well as motion of the vertebras. This computational engineering analysis was aimed to support patients suffering anterior cervical arthrodesis after a degenerative disease or trauma. The obtained data from this research may provide an essential base to estimate the stabilization quality and mechanical properties of biomaterial selection. Model of the region between C4 and C6 segments of vertebrae of cervical spine was produced to correct the stabilization of implant with non-linear material properties. Study of the cervical biomaterial implant has provided instantaneous virtual experiment of secure fixation with minimal complications before a real implant surgery, using computer aided virtual engineering.
  • Istanbul University, Faculty of Engineering, Department of Mechanical Engineering, Avcılar, Istanbul, 34320 Turkey
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