Einsatz eines 3D-Lasermesssystems zur Bestimmung modaler Parameter humaner Hüftbeine

The demands on surgery are continuously rising due to e.g. innovative implants or new kinds of operation techniques. As a result computer models, such as finite element models, have become important tools for the surgeon in surgical planning and implant choice. The complexity and uniqueness of biological structures pose a challenge to measurement technology. This paper describes the first use of a 3D-laser vibrometer in this field which presents several advantages compared to commonly used sensors such as accelerometers or strain gauges. Examples are the non-contact and reactionless measuring principle and the measurement in a global coordinate system by a large number of viable measurement points. The paper offers specifics regarding the measurement procedure and provides information for the implementation of freshly frozen bones, especially on human hemipelvis. The relevant modal parameters could be extracted from the measured data. The measurement system introduced here is appropriate for the verification of computer models of freshly frozen preparations.