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dc.contributor.authorJohnson, Louise*
dc.contributor.authorDe Asha, Alan R.*
dc.contributor.authorMunjal, R.*
dc.contributor.authorKulkarni, J.*
dc.contributor.authorBuckley, John G.*
dc.date.accessioned2016-04-27T12:01:37Z
dc.date.available2016-04-27T12:01:37Z
dc.date.issued2014
dc.identifier.citationJohnson L, De Asha AR, Munjal R et al (2014) Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. Journal of Rehabilitation Research and Development. 51(3): 429-438.en_US
dc.identifier.urihttp://hdl.handle.net/10454/8200
dc.descriptionYesen_US
dc.description.abstractMost clinically available prosthetic feet have a rigid attachment or incorporate an “ankle” device allowing elastic articulation during stance, with the foot returning to a “neutral” position at toe-off. We investigated whether using a foot with a hydraulically controlled articulating ankle that allows the foot to be relatively dorsiflexed at toe-off and throughout swing would increase minimum toe clearance (MTC). Twenty-one people with unilateral transtibial amputation completed overground walking trials using their habitual prosthetic foot with rigid or elastic articulating attachment and a foot with a hydraulic ankle attachment (hyA-F). MTC and other kinematic variables were assessed across multiple trials. When using the hyA-F, mean MTC increased on both limbs (p= 0.03). On the prosthetic limb this was partly due to the device being in its fully dorsiflexed position at toe-off, which reduced the “toes down” foot angle throughout swing (p = 0.01). Walking speed also increased when using the hyA-F (p = 0.001) and was associated with greater swing-limb hip flexion on the prosthetic side (p = 0.04), which may have contributed to the increase in mean MTC. Variability in MTC increased on the prosthetic side when using the hyA-F (p = 0.03), but this did not increase risk of tripping.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1682/JRRD.2013.05.0126en_US
dc.rights© 2014 The Authors. Published Open Access by the Rehabilitation Research and Development Service, Department of Veterans Affairs. Reproduced in accordance with the publisher's self-archiving policy.en_US
dc.subjectAmputation; Dorsiflexion; Gait; Hydraulic ankle; Prosthesis; Toe clearance; Transtibial; Tripping; Unilateral; Walking speeden_US
dc.titleToe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankleen_US
dc.status.refereedYesen_US
dc.typeArticleen_US
dc.type.versionPublished versionen_US
refterms.dateFOA2018-07-25T13:58:27Z


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