3D Numerical Design and Analysis of Transfemoral Socket A Case Study

Abstract

This research presents an integrated approach to the design and numerical analysis of an artificial socket. 3D design and reverse modeling techniques offer promising tools for improving the existing design methods. In this study, a CT scan of a double-amputated young patient, weighing 70 kg, was used to produce 3D model of the stump. A design protocol for the design of the artificial limb socket and evaluation of the mechanical characteristics within the interface area between the socket and the stump were suggested.

The numerical model of the stump was obtained based on image processing techniques, and the numerical design of the socket was performed using the measured values ​​of the radiological images using 3D max. The performance of the double-insert socket was evaluated by observing the distribution of equivalent stress values ​​on the inner and outer socket using the Ansys v16.0.

The proposed engineering approach enables the production of personal numerical models for each patient. Measured stresses indicate the areas with maximum pressure of the socket, which require modifications to optimize the performance of the prosthesis.