Periprosthetic Fields and Currents of an Electrostimulative Acetabular Revision System

Electrostimulative therapy has been used for more than 20 years to improve the healing of bone fractures. The objective is to adopt electrostimulative procedures to an acetabular cup revision system. One main issue is the optimization of the implants inherent electrical system using adjustable geometry and coil parameters to achieve an electric field distribution within the area of relevance with the appropriate strength and as homogeneous as possible. In the work described here the field distribution on the surface of the acetabular cup was determined by “finite-integration-theory” electromagnetic field simulations.