Journal
MICROMACHINES
Volume 12, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/mi12030298
Keywords
prostheses; ITAP; micro topology; ANSYS; MATLAB; additive manufacture
Categories
Funding
- Future Manufacturing Research Institute, College of Engineering, Swansea University
- Advanced Sustainable Manufacturing Technologies (ASTUTE 2022) project - EU's European Regional Development Fund through the Welsh European Funding Office
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This paper investigates the forces acting upon the Intraosseous Transcutaneous Amputation Prosthesis and designs a failure feature to prevent bone damage. The study uses MATLAB and ANSYS models to analyze the topology of the prosthesis and suggests further research on designing a fully functional failure feature. Physical testing is necessary for validation of the study's findings.
This paper studies the forces acting upon the Intraosseous Transcutaneous Amputation Prosthesis, ITAP, that has been designed for use in a quarter amputated femur. To design in a failure feature, utilising a safety notch, which would stop excessive stress, sigma, permeating the bone causing damage to the user. To achieve this, the topology of the ITAP was studied using MATLAB and ANSYS models with a wide range of component volumes. The topology analysis identified critical materials and local maximum stresses when modelling the applied loads. This together with additive layer manufacture allows for bespoke prosthetics that can improve patient outcomes. Further research is needed to design a fully functional, failure feature that is operational when extreme loads are applied from any direction. Physical testing is needed for validation of this study. Further research is also recommended on the design so that the sigma within the ITAP is less than the yield stress, sigma(s), of bone when other loads are applied from running and other activities.
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