An Automatic Modeling Approach for Optimized Positioning of an Electrostimulative Implant in the Human Femoral HeadY. Su, D. Kluess, W. Mittelmeier, M. Ellenrieder, U. van Rienen, R. Bader
Department of Orthopaedics, University of Rostock, Rostock, Germany
Institute of General Electrical Engineering, University of Rostock, Rostock, Germany
Introduction Electromagnetic stimulation is a common therapy to support bone healing in cases of avascular necrosis or pseudarthrosis. An electrostimulative screw implant (Asnis III s-series screw in Figure 1) is used to stimulate bone regeneration in the treatment of femoral head avascular necrosis. To enable positive outcome of the treatment, optimal positioning of the electric implant is critical. The aim of the present study is to optimize the implant position by an automatic modelling approach regarding optimum distribution of the electric field. Materials and Methods Optimization was accomplished using a specific software tool (iSIGHT) combined with a finite element solver (COMSOL Multiphysics® software).