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AM lower-limb prosthetic socket: Using FEA for improved mechanical performance

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posted on 2022-12-16, 14:00 authored by Theodoros Marinopoulos, Simin LiSimin Li, Vadim SilberschmidtVadim Silberschmidt
Prosthetic sockets are bespoke products tailored to the needs of the individual user. Their manufacturing requires many workhours to achieve high quality and comfort. As modern technologies are introduced in healthcare, 3D printing of prosthetic sockets is also gaining ground. Still, prosthetic products made with this manufacturing process are limited and their mechanical performance is mostly unexplored. In this study, prosthetic sockets were 3D printed with PLA, using commercially available filament and printer. The sockets were tested in accordance with BS EN ISO 10328–2006 test instructions for ultimate strength to evaluate their ability to safely bear the loads caused by user's weight and movement. It was found that inconsistent behaviour occurs in materials and caution is advised when choosing them. Still, 3D printed sockets could sustain the required loads and, in some cases, exceed 5000 N (>5fold user's weight). Improved mechanical performance was achieved with a new socket design created utilising the data from finite-element analysis (FEA). The study addresses the challenges of using FEA to develop a 3D printed prosthetic socket and the benefits of the novel process for the healthcare industry.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Materials Today: Proceedings

Volume

70

Pages

499-503

Publisher

Elsevier

Version

  • VoR (Version of Record)

Rights holder

© Elsevier

Publisher statement

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Publication date

2022-10-08

Copyright date

2022

eISSN

2214-7853

Language

  • en

Depositor

Deposit date: 3 November 2022

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