Application of MOBILE for an Improved Kinematical Model Using Motion- and MRI measurements
T. Stark (University of Duisburg-Essen, Germany), A. Kecskeméthy (University of Duisburg-Essen, Germany) and M. Tändl (University of Duisburg-Essen, Germany)
Accurate bone motion reconstruction from marker tracking is still an open issue in biomechanics. Presented in this paper is a novel approach for gait motion reconstruction based on kinematical loops and functional skeleton features from segmented MRI data. The method uses an alternative path for concatenating relative motion, starting at the feet and closing at the hip joints. From the evaluation of discrepancies between predicted and geometrically identified functional data such as knee axis and hip joint centers a cost function is generated with which the prediction model can be optimized. Computations are performed with the object-oriented library MOBILE.