A new method to develop the finite element model of the bones in the hand from CT scans

There is a need for biomechanical computer models that can qualitatively and quantitatively generate an accurate representation of the patient´s condition. Such a model of the hand was developed using computerized axial tomography (CT) scans from a cadaver hand. CT and magnetic resonance (MR) scans of a cadaver hand glued to a polycarbonate box were acquired in the axial orientation. The bones from the CT images were segmented using edge detection technique. The point cloud of the individual bones in millimeter coordinates was fitted with curves. A solid surfaces fitted to the curves were assembled to build a finite element (FE) model comprising of the bones of the hand.