Abstract
Technique to make patient specific finite-element models of bone representing bone density distribution by using CT images has been established. The patient specific modeling is expected for application in clinics of orthopedic surgery and human injury analysis of traffic accident. In particular, pelvic finite-element models, which have high bio-fidelity in viewpoint of pelvic shape, cortical thickness, bone mass density, etc, are required for pelvic fracture analysis of pedestrian collision in traffic accident. Although the technique of CT image based modeling is also available for pelvis, validity of the pelvic FE model has not sufficiently studied in mechanical viewpoint. In this study, individual finite-element model of coxal bone based on x-ray CT image data was created. The coxal model has not only correct shape but also bone mass density distribution. Strain of coxal bone surface analyzed by the finite-element model was compared with corresponding strain measured in loading experiment, and validity of the model was discussed.
