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dc.contributor.authorDe Asha, Alan R.*
dc.contributor.authorJohnson, Louise*
dc.contributor.authorMunjal, R.*
dc.contributor.authorKulkarni, J.*
dc.contributor.authorBuckley, John G.*
dc.date.accessioned2015-11-30T15:55:52Z
dc.date.available2015-11-30T15:55:52Z
dc.date.issued2013-02
dc.identifier.citationDe Asha AR, Johnson L, Munjal R, Kulkarni J and Buckley JG (2013) Attenuation of centre-of-pressure trajectory fluctuations under the prosthetic foot when using an articulating hydraulic ankle attachment compared to fixed attachment. Clinical Biomechanics, 28 (2): 218–224.en_US
dc.identifier.urihttp://hdl.handle.net/10454/7488
dc.descriptionyesen_US
dc.description.abstractBackground Disruptions to the progress of the centre-of-pressure trajectory beneath prosthetic feet have been reported previously. These disruptions reflect how body weight is transferred over the prosthetic limb and are governed by the compliance of the prosthetic foot device and its ability to simulate ankle function. This study investigated whether using an articulating hydraulic ankle attachment attenuates centre-of-pressure trajectory fluctuations under the prosthetic foot compared to a fixed attachment. Methods Twenty active unilateral trans-tibial amputees completed walking trials at their freely-selected, comfortable walking speed using both their habitual foot with either a rigid or elastic articulating attachment and a foot with a hydraulic ankle attachment. Centre-of-pressure displacement and velocity fluctuations beneath the prosthetic foot, prosthetic shank angular velocity during stance, and walking speed were compared between foot conditions. Findings Use of the hydraulic device eliminated or reduced the magnitude of posteriorly directed centre-of-pressure displacements, reduced centre-of-pressure velocity variability across single-support, increased mean forward angular velocity of the shank during early stance, and increased freely chosen comfortable walking speed (P ≤ 0.002). Interpretation The attenuation of centre-of-pressure trajectory fluctuations when using the hydraulic device indicated bodyweight was transferred onto the prosthetic limb in a smoother, less faltering manner which allowed the centre of mass to translate more quickly over the foot.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1016/j.clinbiomech.2012.11.013en_US
dc.rights© 2013 Elsevier. Reproduced in accordance with the publisher's self-archiving policy.en_US
dc.subjectAmputee, Gait, Centre-of-pressure, Prosthesis, Walking speed, Prosthetic footen_US
dc.titleAttenuation of centre-of-pressure trajectory fluctuations under the prosthetic foot when using an articulating hydraulic ankle attachment compared to fixed attachment.en_US
dc.status.refereedyesen_US
dc.date.Accepted2012-11-26
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2018-07-25T14:13:37Z


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