Fakultät Informatik

Interactive Simulation and Visualization in Joint Replacement Surgery

 Christian Dick,  Joachim Georgii, Rüdiger Westermann

Computer Graphics and Visualization Group, Technische Universität München, Germany

Background

We present a pre-operative planning tool for joint replacement surgery, which allows for a patient-specific selection of the optimal implant design, size and position. Based on a computational steering approach, our tool enables the surgeon to interact with digital models of bones and implants in a virtual 3D environment, and simultaneously computes and visualizes the load transfer between the implant and the bone in real-time. This allows the surgeon to interactively find an optimally shaped and positioned implant where the bone stress pattern is close to the pre-operative stress state, which is crucial to prevent stress shielding and consecutive effects of atrophy and aseptic loosening. Our tool runs on a multi-core PC with consumer-class graphics hardware (GPU).

Visualization of the von Mises stress in a loaded femur using volume ray-casting.

Acknowledgments

The first author is funded by the TUM International Graduate School of Science and Engineering (IGSSE). We thank our cooperation partners at the Chair for Computation in Engineering, TUM and at the Clinic for Orthopaedics and Sport Orthopaedics, Klinikum Rechts der Isar, TUM.

Associated publications

Interactive Simulation and Visualization in Joint Replacement Surgery
C. Dick, J. Georgii, R. Westermann, 10. Internationale Biomechanik- und Biomaterial-Tage München 2008 [Bibtex]

 

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