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dc.contributor.authorGenter, Jeremy-
dc.contributor.authorCroci, Eleonora-
dc.contributor.authorOberreiter, Birgit-
dc.contributor.authorEckers, Franziska-
dc.contributor.authorBühler, Dominik-
dc.contributor.authorGascho, Dominic-
dc.contributor.authorMüller, Andreas M.-
dc.contributor.authorMündermann, Annegret-
dc.contributor.authorBaumgartner, Daniel-
dc.date.accessioned2024-03-22T10:59:14Z-
dc.date.available2024-03-22T10:59:14Z-
dc.date.issued2024-
dc.identifier.issn0021-9290de_CH
dc.identifier.issn1873-2380de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/30356-
dc.description.abstractGlenohumeral biomechanics after rotator cuff (RC) tears have not been fully elucidated. This study aimed to investigate the muscle compensatory mechanism in weight-bearing shoulders with RC tears and asses the induced pathomechanics (i.e., glenohumeral translation, joint instability, center of force (CoF), joint reaction force). An experimental, glenohumeral simulator with muscle-mimicking cable system was used to simulate 30° scaption motion. Eight fresh-frozen shoulders were prepared and mounted in the simulator. Specimen-specific scapular anthropometry was used to test six RC tear types, with intact RC serving as the control, and three weight-bearing loads, with the non-weight-bearing condition serving as the control. Glenohumeral translation was calculated using instantaneous helical axis. CoF, muscle forces, and joint reaction forces were measured using force sensors integrated into the simulator. Linear mixed effects models (RC tear type and weight-bearing) with random effects (specimen and sex) were used to assess differences in glenohumeral biomechanics. RC tears did not change the glenohumeral translation (p > 0.05) but shifted the CoF superiorly (p ≤ 0.005). Glenohumeral translation and joint reaction forces increased with increasing weight bearing (p < 0.001). RC and deltoid muscle forces increased with the presence of RC tears (p ≤ 0.046) and increased weight bearing (p ≤ 0.042). The synergistic muscles compensated for the torn RC tendons, and the glenohumeral translation remained comparable to that for the intact RC tendons. However, in RC tears, the more superior CoF was close to where glenoid erosion occurs in RC tear patients with secondary osteoarthritis. These findings underscore the importance of early detection and precise management of RC tears.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofJournal of Biomechanicsde_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subjectShoulderde_CH
dc.subjectBiomechanicsde_CH
dc.subjectSimulationde_CH
dc.subjectGlenohumeral simulatorde_CH
dc.subjectMuscle forcede_CH
dc.subjectRotator cuff tearde_CH
dc.subjectCadaverde_CH
dc.subjectScaptionde_CH
dc.subject.ddc610: Medizin und Gesundheitde_CH
dc.subject.ddc620: Ingenieurwesende_CH
dc.titleThe influence of rotator cuff tear type and weight bearing on shoulder biomechanics in an ex vivo simulator experimentde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitut für Mechanische Systeme (IMES)de_CH
dc.identifier.doi10.1016/j.jbiomech.2024.112055de_CH
zhaw.funding.euNode_CH
zhaw.issue112055de_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedBME Biomechanical Engineering - Surgical Technologiesde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
Appears in collections:Publikationen School of Engineering

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Genter, J., Croci, E., Oberreiter, B., Eckers, F., Bühler, D., Gascho, D., Müller, A. M., Mündermann, A., & Baumgartner, D. (2024). The influence of rotator cuff tear type and weight bearing on shoulder biomechanics in an ex vivo simulator experiment. Journal of Biomechanics, 112055. https://doi.org/10.1016/j.jbiomech.2024.112055
Genter, J. et al. (2024) ‘The influence of rotator cuff tear type and weight bearing on shoulder biomechanics in an ex vivo simulator experiment’, Journal of Biomechanics [Preprint], (112055). Available at: https://doi.org/10.1016/j.jbiomech.2024.112055.
J. Genter et al., “The influence of rotator cuff tear type and weight bearing on shoulder biomechanics in an ex vivo simulator experiment,” Journal of Biomechanics, no. 112055, 2024, doi: 10.1016/j.jbiomech.2024.112055.
GENTER, Jeremy, Eleonora CROCI, Birgit OBERREITER, Franziska ECKERS, Dominik BÜHLER, Dominic GASCHO, Andreas M. MÜLLER, Annegret MÜNDERMANN und Daniel BAUMGARTNER, 2024. The influence of rotator cuff tear type and weight bearing on shoulder biomechanics in an ex vivo simulator experiment. Journal of Biomechanics. 2024. Nr. 112055. DOI 10.1016/j.jbiomech.2024.112055
Genter, Jeremy, Eleonora Croci, Birgit Oberreiter, Franziska Eckers, Dominik Bühler, Dominic Gascho, Andreas M. Müller, Annegret Mündermann, and Daniel Baumgartner. 2024. “The Influence of Rotator Cuff Tear Type and Weight Bearing on Shoulder Biomechanics in an Ex Vivo Simulator Experiment.” Journal of Biomechanics, no. 112055. https://doi.org/10.1016/j.jbiomech.2024.112055.
Genter, Jeremy, et al. “The Influence of Rotator Cuff Tear Type and Weight Bearing on Shoulder Biomechanics in an Ex Vivo Simulator Experiment.” Journal of Biomechanics, no. 112055, 2024, https://doi.org/10.1016/j.jbiomech.2024.112055.


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