Abstract
The project "in silico Human" is one for constructing a model of "each patient" in a virtual space (in silico). "in silico" hip joint is one part of this project and has already been adopted clinically as "Computer Navigation System for Surgery" for supporting geometrically the surgical operation in the orthopedics. In this paper, we aim to introduce the function for mechanical analysis in this system so that we may have more detailed plan to THA (Total Hip Arthroplasty) from the viewpoint of biomechanics and can expect situations after the operation for the long term. In order to create a finite-element-model for each patient, we develop a system that constructs voxel finite element models from CT-images by combining with the Navigation System. By the use of the present system, we can implant prostheses in femur at arbitrary position and angle automatically. We examined and compared the computational time for analysis and the analysis results by the difference of voxel sizes. Moreover, we examined the stress distribution by the difference of the prostheses' angle implanted.
