VTO3D: Metodología para evaluación del estado tensional interno óseo en intervenciones quirúrgicas virtuales

Abstract

There are many biomechanical researches to assess or predict the behaviour of a bone when certain efforts are applied or when a prosthetic element is implanted. The present study proposes a new tool with a low computational cost. This tool accelerates the virtual assess of the biomechanical behaviour of a bone after adding an implant. This paper presents a case of a femur after a THR surgery.

To start with, we use a specific software developed by the authors, which generate voxel models of bones and prosthesis in AutoCAD®. Based on these models, we can obtain two other FEM models to calculate the internal bone stress and make a comparison between the stress before and after the surgery.

To improve the assessment of stress changes, we create a new voxel model representing the decreases and increases in each node considered. This methodology allows specialists and designers to quickly verify future damage in bone remodelling after implantation of the prosthesis.