A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee - ePrints Soton The University of Southampton Courses University life Research Business Global About Visit Alumni Departments News Events Contact × Search the SiteSearch Filter your search: All Courses Projects Staff University of Southampton Institutional Repository Search Advanced Search Policies & Help Latest Download Statistics Browse by Year Browse by Divisions LeftRight A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee Background The bespoke interface between a lower limb residuum and a prosthetic socket is critical for an amputee’s comfort and overall rehabilitation outcomes. Analysis of interface kinematics and kinetics is important to gain full understanding of the interface biomechanics, which could aid clinical socket fit, rehabilitation and amputee care. This pilot study aims to investigate the dynamic correlation between kinematic movement and kinetic stresses at the interface during walking tests on different terrains. Methods One male, knee disarticulation amputee participated in the study. He was asked to walk on both a level surface and a 5° ramped surface. The movement between the residuum and the socket was evaluated by the angular and axial couplings, based on the outputs from a 3D motion capture system. The corresponding kinetic stresses at anterior-proximal (AP), posterior-proximal (PP) and anterior-distal (AD) locations of the residuum were measured, using individual stress sensors. Findings Approximately 8° of angular coupling and up to 32mm of axial coupling were measured when walking on different terrains. The direction of the angular coupling shows strong correlation with the pressure difference between the PP and AP sensors. Higher pressure was obtained at the PP location than the AP location during stance phase, associated with the direction of the angular coupling. A strong correlation between axial coupling length, L, and longitudinal shear was also evident at the PP and AD locations i.e. the shortening of L corresponds to the increase of shear in the proximal direction. Although different terrains did not affect these correlations in principle, interface kinematic and kinetic values suggested that gait changes can induce modifications to the interface biomechanics. Clinical relevance It is envisaged that the reported techniques could be potentially used to provide combined kinematics and kinetics for the understanding of biomechanics at the residuum/socket interface, which may play an important role in the clinical assessment of prosthetic component settings, including socket fit quality. 10.1016/j.medengphy.2017.08.014 1350-4533 131-139 Tang, Jinghua b4b9a22c-fd6d-427a-9ab1-51184c1d2a2c Mcgrath, Michael 32b5ce9d-eada-4edb-9c2e-ebc4d05142e9 Hale, Nicholas 3efb2814-5536-480d-897e-f15985accdee Jiang, Liudi 374f2414-51f0-418f-a316-e7db0d6dc4d1 Bader, Daniel 9884d4f6-2607-4d48-bf0c-62bdcc0d1dbf Laszczak, Piotr 83f0c73b-a2d3-4bc6-967f-579497af0754 Moser, David 09874cab-348f-47f9-b018-1c2875d16998 Zahedi, Saeed fec0d8af-5088-4b23-b94e-2ba1d019850a 1 November 2017 Tang, Jinghua b4b9a22c-fd6d-427a-9ab1-51184c1d2a2c Mcgrath, Michael 32b5ce9d-eada-4edb-9c2e-ebc4d05142e9 Hale, Nicholas 3efb2814-5536-480d-897e-f15985accdee Jiang, Liudi 374f2414-51f0-418f-a316-e7db0d6dc4d1 Bader, Daniel 9884d4f6-2607-4d48-bf0c-62bdcc0d1dbf Laszczak, Piotr 83f0c73b-a2d3-4bc6-967f-579497af0754 Moser, David 09874cab-348f-47f9-b018-1c2875d16998 Zahedi, Saeed fec0d8af-5088-4b23-b94e-2ba1d019850a Tang, Jinghua, Mcgrath, Michael, Hale, Nicholas, Jiang, Liudi, Bader, Daniel, Laszczak, Piotr, Moser, David and Zahedi, Saeed (2017) A combined kinematic and kinetic analysis at the residuum/socket interface of a knee-disarticulation amputee. Medical Engineering & Physics, 49, 131-139. (doi:10.1016/j.medengphy.2017.08.014). Record type: Article Abstract Background The bespoke interface between a lower limb residuum and a prosthetic socket is critical for an amputee’s comfort and overall rehabilitation outcomes. Analysis of interface kinematics and kinetics is important to gain full understanding of the interface biomechanics, which could aid clinical socket fit, rehabilitation and amputee care. This pilot study aims to investigate the dynamic correlation between kinematic movement and kinetic stresses at the interface during walking tests on different terrains. Methods One male, knee disarticulation amputee participated in the study. He was asked to walk on both a level surface and a 5° ramped surface. The movement between the residuum and the socket was evaluated by the angular and axial couplings, based on the outputs from a 3D motion capture system. The corresponding kinetic stresses at anterior-proximal (AP), posterior-proximal (PP) and anterior-distal (AD) locations of the residuum were measured, using individual stress sensors. Findings Approximately 8° of angular coupling and up to 32mm of axial coupling were measured when walking on different terrains. The direction of the angular coupling shows strong correlation with the pressure difference between the PP and AP sensors. Higher pressure was obtained at the PP location than the AP location during stance phase, associated with the direction of the angular coupling. A strong correlation between axial coupling length, L, and longitudinal shear was also evident at the PP and AD locations i.e. the shortening of L corresponds to the increase of shear in the proximal direction. Although different terrains did not affect these correlations in principle, interface kinematic and kinetic values suggested that gait changes can induce modifications to the interface biomechanics. Clinical relevance It is envisaged that the reported techniques could be potentially used to provide combined kinematics and kinetics for the understanding of biomechanics at the residuum/socket interface, which may play an important role in the clinical assessment of prosthetic component settings, including socket fit quality. Text accepted manuscript - Accepted Manuscript Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (2MB) More information Submitted date: 7 August 2017 Accepted/In Press date: 21 August 2017 e-pub ahead of print date: 15 September 2017 Published date: 1 November 2017 Identifiers Local EPrints ID: 414185 URI: http://eprints.soton.ac.uk/id/eprint/414185 DOI: doi:10.1016/j.medengphy.2017.08.014 ISSN: 1350-4533 PURE UUID: e9dc139d-3759-4f4f-9d62-a888cee81032 ORCID for Jinghua Tang: orcid.org/0000-0003-3359-5891 ORCID for Liudi Jiang: orcid.org/0000-0002-3400-825X ORCID for Daniel Bader: orcid.org/0000-0002-1208-3507 Catalogue record Date deposited: 18 Sep 2017 16:31 Last modified: 17 Mar 2021 05:02 Export record ASCII CitationAtomBibTeXData Cite XMLDublin CoreDublin CoreEP3 XMLEndNoteHTML CitationHTML CitationHTML ListJSONMETSMODSMPEG-21 DIDLOpenURL ContextObjectOpenURL ContextObject in SpanRDF+N-TriplesRDF+N3RDF+XMLRIOXX2 XMLReferReference ManagerSimple Metadata Altmetrics Contributors Author: Jinghua Tang Author: Michael Mcgrath Author: Nicholas Hale Author: Liudi Jiang Author: Daniel Bader Author: Piotr Laszczak Author: David Moser Author: Saeed Zahedi University divisions Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Mechanical Engineering (pre 2018 reorg) Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Mechanical Engineering > Mechanical Engineering (pre 2018 reorg) Mechanical Engineering > Mechanical Engineering (pre 2018 reorg) Faculties (pre 2018 reorg) > Faculty of Health Sciences (pre 2018 reorg) > Centre for Innovation & Leadership (pre 2018 reorg) > Researcher Development (pre 2018 reorg) Current Faculties > Faculty of Environmental and Life Sciences > School of Health Sciences > Faculty of Health Sciences (pre 2018 reorg) > Centre for Innovation & Leadership (pre 2018 reorg) > Researcher Development (pre 2018 reorg) School of Health Sciences > Faculty of Health Sciences (pre 2018 reorg) > Centre for Innovation & Leadership (pre 2018 reorg) > Researcher Development (pre 2018 reorg) Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Mechanical Engineering (pre 2018 reorg) > Engineering Mats & Surface Engineerg Gp (pre 2018 reorg) Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Mechanical Engineering > Mechanical Engineering (pre 2018 reorg) > Engineering Mats & Surface Engineerg Gp (pre 2018 reorg) Mechanical Engineering > Mechanical Engineering (pre 2018 reorg) > Engineering Mats & Surface Engineerg Gp (pre 2018 reorg) Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Education Hub (pre 2018 reorg) Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Mechanical Engineering > Engineering Materials and Surface Engineering Group Mechanical Engineering > Engineering Materials and Surface Engineering Group Download statistics Downloads from ePrints over the past year. 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