This paper reports on a methodology to reposition the hip joint of a human body finite element model. Repositioning of the hip in flexion – extension, abduction – adduction and internal – external rotations with respect to the pelvic bone has been demonstrated. The developed method is based on computer graphics techniques and permits control over the kinematics of the bones. For some critical areas (in the vicinity of the joint) where distortion of the soft tissue elements is large, a mesh smoothing technique is used to improve the mesh quality. The applicability of the tool is demonstrated by orienting the lower extremity model (with respect to the pelvis) to generate models for various postures. The tool typically can generate a model at 90o flexion, 30o extension, 15o internal / external rotation, 30o abduction, 4o adduction and any combinations of these motions in just a few seconds without any subjective interventions.
Keywords:
Human body FE model; Posture; Repositioning; Mesh morphing