Evaluation of various design concepts in passive ankle-foot orthoses using finite element analysis

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dc.authorid0000-0002-1861-9368
dc.contributor.authorSürmen, Hasan Kemal
dc.contributor.authorArslan, Yunus Ziya
dc.date.accessioned2022-01-12T08:24:13Z
dc.date.available2022-01-12T08:24:13Z
dc.date.issued2021
dc.departmentTAÜ, Fen Bilimleri Enstitüsü, Robotlar ve Akıllı Sistemler Ana Bilim Dalı Koleksiyonuen_US
dc.description.abstractAnkle-foot orthoses (AFOs) are typically prescribed to improve the gait function of ambulatory children with neurological conditions such as cerebral palsy or spina bifida. Due to the excessive and repetitive loading conditions, plastic material deformation can be observed in AFOs, especially over the lateral and medial parts of the ankle, which limits the effect of AFOs in the stabilization of the ankle joint. Trimline design and severity influence the rotational stiffness of an AFO considerably. In this study, we proposed novel trimming approaches for AFOs such that the trimlines were performed on the dorsal side rather than lateral and medial sides to reduce the magnitude of peak stresses and provide a homogenous stress distribution over AFOs. We analyzed eight dorsal trimline designs having different basic geometries by using the finite element method. To objectively evaluate the stress levels, the same boundary and loading conditions were considered for all design alternatives. We found that low peak stress values were observed in the AFO models with trimline geometries of the circle, ellipse, and slot variations. The vertical elliptic trimline on the dorsal side of the AFO was the most effective to decrease the magnitude of the peak stresses. The findings of our study are expected to contribute a complementary solution to orthotists in the fabrication of AFOs with high durability. (C) 2021 Karabuk University. Publishing services by Elsevier B.V.
dc.identifier.citationSurmen, H. K., & Arslan, Y. Z. (2021). Evaluation of various design concepts in passive ankle-foot orthoses using finite element analysis. Engineering Science and Technology, an International Journal, 24(6), 1301-1307.
dc.identifier.doi10.1016/j.jestch.2021.03.004
dc.identifier.endpage1307en_US
dc.identifier.issn2215-0986
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-85103265125
dc.identifier.scopusqualityQ1
dc.identifier.startpage1301en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12846/630
dc.identifier.volume24en_US
dc.identifier.wosWOS:000707779000003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorArslan, Yunus Ziya
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofEngineering Science and Technology, an International Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject3D Structured-Light Scanningen_US
dc.subjectAFO Designen_US
dc.subjectAnkle-Foot Orthosisen_US
dc.subjectDorsal Trimlineen_US
dc.subjectFinite Element Method (FEM)en_US
dc.subject3D Yapılandırılmış-Hafif Taramaen_US
dc.subjectAFO Tasarımen_US
dc.subjectAyak Bileğien_US
dc.subjectAyak Ortezien_US
dc.subjectSonlu Elemanlar Yöntemien_US
dc.subjectKnöchel FußOrtheseen_US
dc.subjectDorsale Trimmlinieen_US
dc.titleEvaluation of various design concepts in passive ankle-foot orthoses using finite element analysis
dc.typeArticle

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