Abstract
When quantitative computed tomography (CT) is used as basis for finite element (FE) modelling of bones, it is essential to correctly derive bone density from the scans using a calibration phantom. Various methods are described in the literature as how to link CT data to mechanical properties of the FE model. It is known that clear differences exist between CT data sets from bones scanned either in a water basin or in a (cadaver) body [Keyak, 2003]. We, therefore, addressed the following questions: 1. What are the differences in bone density derived from CT-data between femora scanned in situ, in a water basin, and in an anatomically shaped physical model? 2. What is the influence of different calibration methods on bone density, and on stiffness and failure load predictions by FE modelling?
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