Performance Optimization of Blunt-Prosthesis-Rod Complex with Tribological Considerations

Abstract:

The interface blunt-prosthesis from blunt-prosthesis-rod complex is the subject of stress and friction due to forces that act in the walking stage. The dermal wounds and patient's discomfort sensation that can appear can be alleviated or predicted by analyzing the stump’s pressure map taking into account tribological aspects. There are many studied related to transtibial prosthesis but studies that analyze the transfemoral prosthesis are relative rare. A analyze of pressure in blunt-prosthesis complex for transfemoral sub-ischeal prosthesis is proposed during a complete gait cycle.The experiments used three types of liners and a standard type of socket. The areas that are subject of maximum stress and friction are identified as the value of forces of moments that act n stump during a gait cycle. An integral measure and functional ones are proposed to evaluate for influence of each factor that can contribute to optimization of prosthesis and an empirical formulas that connect these measure for prediction is suggested. Theoretical approaches are presented along with experimental results and further research directions.

• Periodical: Applied Mechanics and Materials (Volume 658)
• Pages: 429-434
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.658.429
• Online since: October 2014
• Authors: Robert Filep, Dragos Arotaritei*, Marius Turnea, Mihai Ilea, Mariana Rotariu
• Keywords: Blunt, Femur Bone, Mathematical Modeling, Numerical Simulation, Prosthesis, Tribology

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