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dc.contributor.authorFrossard, Laurent
dc.contributor.authorLeech, Barry
dc.contributor.authorPitkin, Mark
dc.date.accessioned2019-09-30T01:44:59Z
dc.date.available2019-09-30T01:44:59Z
dc.date.issued2019
dc.identifier.issn0018-9294
dc.identifier.doi10.1109/TBME.2019.2904713
dc.identifier.urihttp://hdl.handle.net/10072/387896
dc.description.abstractObjective: This study describes differentiating prosthetic feet designs fitted to bone-anchored transtibial prostheses based on an automated characterization of ankle stiffness profile relying on direct loading measurements. The objectives were (A) to present a process characterizing stiffness using innovative macro, meso and micro analyses, (B) to present stiffness profiles for feet with and without anthropomorphic designs, where anthropomorphicity is defined as a similarity of the moment-angle dependency in prosthetic and in the anatomical ankle, (C) to determine sensitivity of characterization. Methods: Three participants walked consecutively with two instrumented bone-anchored prostheses including their own prosthetic feet and Free-Flow foot meeting the anthropomorphicity criterion by design. Angle of dorsiflexion was extracted from video footage. Bending moment was recorded using multi-axis transducer attached to osseointegrated fixation. The automated characterization of stiffness involved a 12-step process relying on data-based criterion. Results: The meso analyses confirmed bilinear behavior of moment-angle curves with Index of Anthropomorphicity of -2.966±2.369 Nm/Deg and 2.681±1.089 Nm/Deg indicating a convex and concave shape of usual and Free-Flow feet without and with anthropomorphic designs, respectively. Conclusions: The proposed straightforward meso analysis of the stiffness was capable to report clinical meaningful differences sensitive to feet's anthropomorphicity. Results confirmed the benefits for clinicians to rely on direct loading measurement providing individualized complementary insight into impact of components. Significance: This work could assist the developments of standards and guidelines for manufacturing and safe fitting of components to growing population requiring transtibial prostheses with socket or direct skeletal attachment worldwide.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartofjournalIEEE Trans Biomed Eng
dc.subject.fieldofresearchBiomedical Engineering
dc.subject.fieldofresearchArtificial Intelligence and Image Processing
dc.subject.fieldofresearchElectrical and Electronic Engineering
dc.subject.fieldofresearchcode0903
dc.subject.fieldofresearchcode0801
dc.subject.fieldofresearchcode0906
dc.titleAutomated characterization of anthropomorphicity of prosthetic feet fitted to bone-anchored transtibial prosthesis.
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationFrossard, L; Leech, B; Pitkin, M, Automated characterization of anthropomorphicity of prosthetic feet fitted to bone-anchored transtibial prosthesis., IEEE Trans Biomed Eng, 2019
dc.date.updated2019-09-30T01:41:53Z
dc.description.versionAccepted Manuscript (AM)
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version.
gro.rights.copyright© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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gro.griffith.authorFrossard, Laurent


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