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dc.contributor.authorStarkey, Scott C
dc.contributor.authorLenton, Gavin K
dc.contributor.authorSaxby, David J
dc.contributor.authorHinman, Rana S
dc.contributor.authorBennell, Kim L
dc.contributor.authorWrigley, Tim
dc.contributor.authorLloyd, David
dc.contributor.authorHall, Michelle
dc.date.accessioned2020-05-25T23:13:41Z
dc.date.available2020-05-25T23:13:41Z
dc.date.issued2020
dc.identifier.issn0966-6362
dc.identifier.doi10.1016/j.gaitpost.2020.04.025
dc.identifier.urihttp://hdl.handle.net/10072/394133
dc.description.abstractBACKGROUND: Arthroscopic partial meniscectomy may cause knee osteoarthritis, which may be related to altered joint loading. Previous research has failed to demonstrate that exercise can reduce medial compartment knee loads following meniscectomy but has not considered muscular loading in their estimates. RESEARCH QUESTION: What is the effect of exercise compared to no intervention on peak medial tibiofemoral joint contact force during walking using an electromyogram-driven neuromusculoskeletal model, following medial arthroscopic partial meniscectomy? METHODS: This is a secondary analysis of a randomized controlled trial (RCT). 41 participants aged between 30-50 years with medial arthroscopic partial meniscectomy within the past 3-12 months, were randomly allocated to either a 12-week, home-based, physiotherapist-guided exercise program or to no exercise (control group). Three-dimensional lower-body motion, ground reaction forces, and surface electromyograms from eight lower-limb muscles were acquired during self-selected normal- and fast-paced walking at baseline and follow-up. An electromyogram-driven neuromusculoskeletal model estimated medial compartment contact forces (body weight). Linear regression models evaluated between-group differences (mean difference (95% CI)). RESULTS: There were no significant between-group differences in the change (follow-up minus baseline) in first peak medial contact force during self-selected normal- or fast-paced walking (0.07 (-0.08 to 0.23), P = 0.34 and 0.01 (-0.19 to 0.22), P = 0.89 respectively). No significant between-group difference was found for change in second peak medial contact force during normal- or fast-paced walking (0.09 (-0.09 to 0.28), P = 0.31 and 0.02 (-0.17 to 0.22), P = 0.81 respectively). At the individual level, variability was observed for changes in first (range -26.2% to +31.7%) and second (range -46.5% to +59.9%) peak tibiofemoral contact force. SIGNIFICANCE: This is the first study to apply electromyogram-driven neuromusculoskeletal modelling to an exercise intervention in a RCT. While our results suggest that a 12-week exercise program does not alter peak medial knee loads after meniscectomy, within-participant variability suggests individual-specific muscle activation patterns that warrant further investigation.
dc.description.peerreviewedYes
dc.description.sponsorshipNational Institute of Health (NIH)
dc.description.sponsorshipGriffith University
dc.languageEnglish
dc.publisherElsevier BV
dc.relation.ispartofpagefrom203
dc.relation.ispartofpageto209
dc.relation.ispartofjournalGait & Posture
dc.relation.ispartofvolume79
dc.relation.urihttp://purl.org/au-research/grants/NHMRC/628850
dc.relation.grantID628850
dc.relation.fundersNHMRC
dc.subject.fieldofresearchMechanical Engineering
dc.subject.fieldofresearchClinical Sciences
dc.subject.fieldofresearchHuman Movement and Sports Sciences
dc.subject.fieldofresearchcode0913
dc.subject.fieldofresearchcode1103
dc.subject.fieldofresearchcode1106
dc.subject.keywordsExercise
dc.subject.keywordsGait
dc.subject.keywordsKnee biomechanics
dc.subject.keywordsKnee osteoarthritis
dc.subject.keywordsLoading
dc.titleEffect of exercise on knee joint contact forces in people following medial partial meniscectomy: A secondary analysis of a randomised controlled trial
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationStarkey, SC; Lenton, GK; Saxby, DJ; Hinman, RS; Bennell, KL; Wrigley, T; Lloyd, D; Hall, M, Effect of exercise on knee joint contact forces in people following medial partial meniscectomy: A secondary analysis of a randomised controlled trial, Gait & Posture 2020, 79, pp. 203-209
dcterms.dateAccepted2020-04-22
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2020-05-25T06:53:32Z
dc.description.versionPost-print
gro.rights.copyright© 2020 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorSaxby, David J.
gro.griffith.authorHall, Michelle
gro.griffith.authorLloyd, David
gro.griffith.authorLenton, Gavin


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