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Comparison of prosthetic feet prescribed to active individuals using ISO standards

Mason, ZD and Pearlman, J and Cooper, RA and Laferrier, JZ (2011) Comparison of prosthetic feet prescribed to active individuals using ISO standards. Prosthetics and Orthotics International, 35 (4). 418 - 424. ISSN 0309-3646

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Abstract

Background: Little research has been done on the robustness of prosthetic feet prescribed to military personnel, and manufacturers are not required to test their products prior to sale. This is problematic because the prosthetic feet used by active individuals are subjected to loading conditions not seen in normal gait. Objectives: To evaluate whether commercially available heavy-duty prosthetic feet intended for use by military personnel meet ISO 10328 standards. Study Design: Bench testing of heavy-duty prosthetic feet using ISO 10328 standards. Methods: Prosthetic feet from three different manufacturers were tested according to ISO 10328 standards, using a testing frame fitted with axial load and displacement transducers. Pass/fail information was recorded as well as the stiffness and creep of each foot before and after cyclic testing. Results: All feet passed the ISO 10328 standards at the highest loading level, and some significant differences were found within a given model of prosthesis when comparing stiffness and creep before and after cyclic testing. Conclusions: This study demonstrated that manufacturers of heavy-duty prosthetic feet adhere to the voluntary ISO 10328 standards. However, these standards may be insufficient because the tests simulate only idealized gait. Further development of the standards may be necessary to reproduce the circumstances that occur during extreme usage to ensure that prosthetic feet do not fail. © The International Society for Prosthetics and Orthotics 2011.

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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Mason, ZD
Pearlman, Jjpearlman@pitt.eduJLP46
Cooper, RARCOOPER@pitt.eduRCOOPER
Laferrier, JZ
Centers: Other Centers, Institutes, Offices, or Units > Human Engineering Research Laboratories
Date: 1 December 2011
Date Type: Publication
Journal or Publication Title: Prosthetics and Orthotics International
Volume: 35
Number: 4
Page Range: 418 - 424
DOI or Unique Handle: 10.1177/0309364611421692
Schools and Programs: School of Health and Rehabilitation Sciences > Rehabilitation Science and Technology
Refereed: Yes
ISSN: 0309-3646
MeSH Headings: Amputees; Benchmarking; Biomechanics; Exercise Test; Foot--surgery; Humans; International Agencies; Military Personnel; Motor Activity--physiology; Prostheses and Implants--classification; Prostheses and Implants--standards; Prosthesis Design; Societies, Medical; Weight-Bearing--physiology
PubMed ID: 22031596
Date Deposited: 05 Oct 2012 16:07
Last Modified: 10 Mar 2021 06:17
URI: http://d-scholarship-dev.library.pitt.edu/id/eprint/15646

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