Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/90256
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dc.contributorDepartment of Biomedical Engineeringen_US
dc.contributorMainland Development Officeen_US
dc.creatorPeng, Yen_US
dc.creatorWang, Yen_US
dc.creatorWong, DWCen_US
dc.creatorChen, TLWen_US
dc.creatorZhang, Gen_US
dc.creatorTan, Qen_US
dc.creatorZhang, Men_US
dc.date.accessioned2021-06-02T01:33:24Z-
dc.date.available2021-06-02T01:33:24Z-
dc.identifier.issn0966-6362en_US
dc.identifier.urihttp://hdl.handle.net/10397/90256-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2021 Elsevier B.V. All rights reserved.en_US
dc.rights© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.rightsThe following publication Peng, Y., Wang, Y., Wong, D. W. C., Chen, T. L. W., Zhang, G., Tan, Q., & Zhang, M. (2021). Extrinsic foot muscle forces and joint contact forces in flexible flatfoot adult with foot orthosis: A parametric study of tibialis posterior muscle weakness. Gait & Posture, 88, 54-59 is available at https://doi.org/10.1016/j.gaitpost.2021.05.009.en_US
dc.subjectFoot orthosesen_US
dc.subjectGait analysisen_US
dc.subjectJoint contact forceen_US
dc.subjectMusculoskeletal dynamics simulationen_US
dc.subjectTibialis posterior muscleen_US
dc.titleExtrinsic foot muscle forces and joint contact forces in flexible flatfoot adult with foot orthosis : a parametric study of tibialis posterior muscle weaknessen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage54en_US
dc.identifier.epage59en_US
dc.identifier.volume88en_US
dc.identifier.doi10.1016/j.gaitpost.2021.05.009en_US
dcterms.abstractBackground: The posterior tibialis tendon dysfunction (PTTD) is typically associated with progressive flatfoot deformity, which could be alleviated with foot orthosis. However, the evaluation of tibialis posterior (TP) weakness on lower limb mechanics of flatfoot adults with foot orthoses is scarce and requires further investigation.en_US
dcterms.abstractResearch question: This study aimed to examine the effects of TP weakness on lower limb mechanics in flatfoot adults with foot orthosis through gait analysis and musculoskeletal modelling.en_US
dcterms.abstractMethods: Fifteen young adults with flatfoot were recruited from University to perform a gait experiment with and without foot orthoses. Data collected from the motion capture system were used to drive the musculoskeletal modelling for the estimation of the joint force and extrinsic muscle forces of the lower limb. A parametric analysis was conducted by adjusting the TP muscle strength from 40 % to 100 %. Two-way repeated measures ANOVA was used to compare the peak extrinsic foot muscle forces and joint forces among different levels of TP weakness and insole conditions.en_US
dcterms.abstractResults: TP weakness significantly increased ankle joint force superoinferiorly (F = 125.9, p < 0.001) and decreased anteroposteriorly (F = 125.9, p < 0.001), in addition to a significant increase in the muscle forces of flexor hallucis longus (p < 0.001) and flexor digitorum longus (p < 0.001). Besides, the foot orthosis significantly reduced most peak muscle forces whilst significantly reduced the second peak knee force and peak ankle force compared to the control condition (F = 8.79–30.9, p < 0.05).en_US
dcterms.abstractSignificance: The increased extrinsic foot muscle forces (flexor hallucis longus and flexor digitorum longus) and ankle joint forces in the TP weakness condition indicated that TP weakness may induce compensatory muscle activation and attenuated joint load. The abnormal muscle and joint mechanics in flatfoot adults with TP weakness might be restored by the orthosis.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationGait and posture, July 2021, v. 88, p. 54-59en_US
dcterms.isPartOfGait and postureen_US
dcterms.issued2021-07-
dc.identifier.scopus2-s2.0-85105777095-
dc.identifier.eissn1879-2219en_US
dc.description.validate202106 bcvcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumbera0895-n03, BME-0019en_US
dc.identifier.SubFormID2101-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextPolyU152065/17Een_US
dc.description.fundingTextMinistry of Science and Technology of China (2018YFB1107000)en_US
dc.description.fundingTextNSFC (11732015, 11972315)en_US
dc.description.pubStatusPublisheden_US
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