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Electro-Stimulating Implants for Bone Regeneration: Parameter Analysis on Design and Implant Position

Y. Su[1], R. Souffrant[1], D. Klüß[1], R. Bader[1], M. Ellenrieder[1], and H. Ewald[2]
[1]Department of Orthopaedics, University of Rostock, Rostock, Germany
[2]Department of General Electrical Engineering, University of Rostock, Rostock, Germany
Veröffentlicht in 2011

A common clinical treatment is the application of alternating electromagnetic fields using a screw implant to the weak bone tissue within the femoral head, which speed up the bone regeneration in case of avascular necrosis of the femoral head . In our present work the bipolar induction screw system as the depicted ASNIS S-Series screw with integrated coil and electrodes were investigated.

Numerical simulation of the electric field distribution of different screw designs were carried out. Three kinds of design variations were completed, such as shape of the screw tip, position of the screw in the femoral head and size of the isolation area in the screw.

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