Modelling the Tibial Bone Using Cad Techniques, Starting From the 3d Scan Model

Abstract

To improve the long-term quality of life for patients with major joint problems, choosing an orthopedic implant based on patient particularities is essential. In this sense, numerical modeling of the bone and implant is useful, assembling them and simulating the behavior of this ensemble over time, taking into account the most accurate features of the bone, such as varusvalgus deformities, osteoporotic diseases, etc. The need to use CAD 3D modeling techniques thus appeared. Because bone is irregularly shaped, consisting of more complex 3D surfaces it is difficult to build in Solid Works. That's why, to build it, we started from the virtual 3D scan model with the ExaScan scanner. Once the virtual model has been obtained through CAD techniques, it will be adapted to the patient's particularities (dimensions, bone mass, eventual deformities, etc.). The objective of this paper is numerical modeling of the tibial bone using CAD techniques, starting from the virtual model obtained by 3D scanning.