Biomechanical analysis of the femur- Dynamic Condylar Screw (DCS) system
Journal Title: Archives of Materials Science and Engineering - Year 2016, Vol 79, Issue 1
Abstract
Purpose: The aim of this study was a biomechanical evaluation of the (Dynamic CondylarScrew - DCS) system after epicondyle fractures and a comparison of obtained results of thetwo alternative biomaterials for the stabilizer.Design/methodology/approach: Models of stabilizer and femur were designed, thediscretization was conducted and boundary conditions were set. Numerical analysis with theuse of the finite element method was performed in the ANSYS Workbench 15 Software. Twomodels of system: M-316 LVM (stabilizer with properties CrNiMo steel - femur) and M-Ti64(stabilizers with properties Ti6Al4V alloys – femur) were subjected to numerical analysis. Asa reference point the state of displacement, strain and von Misses stresses by in helfy femur(M-HF) were determined.Findings: For all of the analysed models, the values of assumed mechanical properties ofcortical bone and cancellous bone were not exceeded. Simultaneously, it is possible to usealternative biomaterials, CrNiMo steel or Ti6Al4V alloy for DCS system.Research limitations/implications: In order to perform more detailed characteristics ofanalysed DCS implant, in future research it is expected to carry out macro and microscopicobservations for implants removed from the body and their electrochemical evaluation.Practical implications: The analysis allows the determination of potentially dangerousareas, affected to damage due to overloading. Furthermore, the analysis identifies the areasof initiation and development of crevice, pitting and fatigue corrosion.Originality/value: The presented work allows the selection of alternative metallicbiomaterials for the manufacturing of the evaluated DCS system and indicates its potentiallydangerous area. This work might be interesting for engineers and doctors dealing with theconstruction of a new forms of implants used in orthopedics.
Authors and Affiliations
W. Kajzer, A. Kajzer, M. Antonowicz
Keywords
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