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A Method to Improve Prosthesis Leg Design Based on Pressure Analysis at the Socket-Residual Limb Interface

[+] Author Affiliations
Giorgio Colombo, Davide Felice Redaelli

Politecnico di Milano, Milan, Italy

Claudio Comotti, Daniele Regazzoni, Caterina Rizzi, Andrea Vitali

Università di Bergamo, Bergamo, Italy

Paper No. DETC2016-60131, pp. V01AT02A068; 8 pages
doi:10.1115/DETC2016-60131
From:
  • ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1A: 36th Computers and Information in Engineering Conference
  • Charlotte, North Carolina, USA, August 21–24, 2016
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5007-7
  • Copyright © 2016 by ASME

abstract

This paper presents a methodology and tools to improve the design of lower limb prosthesis through the measurement of pressure analysis at the interface residual limb-socket. The steps of the methodology and the design tools are presented using a case study focused on a transfemoral (amputation above knee) male amputee. The experimental setup based on F-Socket Tekscan pressure system is described as well the results of some static loading tests. Pressure data are visualized with a colour pressure map over the 3D model of the residual limb acquired using an optical low cost scanner, based on MS Kinect. Previous methodology is useful to evaluate a physical prototype; in order to improve also conceptual design, the Finite Element (FE) Analysis has been carried and results reached so far have been compared with experimental tests. Pressure distributions are comparable, even if some discrepancies have been highlighted due to sensors placements and implemented FE model. Future developments have been identified in order to improve the accuracy of the numerical simulations.

Copyright © 2016 by ASME
Topics: Pressure , Design , Prostheses

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