Cadaveric Study of Anterior Cruciate Ligament Failure Patterns Under Uniaxial Tension Along the Ligament

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dc.contributor.authorPaschos, N. K.en
dc.contributor.authorGartzonikas, D.en
dc.contributor.authorBarkoula, N. M.en
dc.contributor.authorMoraiti, C.en
dc.contributor.authorPaipetis, A.en
dc.contributor.authorMatikas, T. E.en
dc.contributor.authorGeorgoulis, A. D.en
dc.date.accessioned2015-11-24T17:32:24Z
dc.date.available2015-11-24T17:32:24Z
dc.identifier.issn0749-8063-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/13723
dc.rightsDefault Licence-
dc.subjectin-situ forcesen
dc.subjectvideo analysisen
dc.subjectpartial tearsen
dc.subjectaclen
dc.subjectmechanismsen
dc.subjectinjuriesen
dc.subjectrotationen
dc.subjectprimatesen
dc.subjectanatomyen
dc.subjectbundlesen
dc.titleCadaveric Study of Anterior Cruciate Ligament Failure Patterns Under Uniaxial Tension Along the Ligamenten
heal.abstractPurpose: The purpose of our study was to clarify the events that take place during anterior cruciate ligament (ACL) failure, focusing on the behavior of the ACL as a composition of multiple fibers, during uniaxial tension along the ligament. Methods: Ten fresh-frozen human cadaveric knee specimens were fixed in an Instron machine (Instron, Norwood, MA), and load was applied parallel to the ACL axis. Two cameras were used to detect the failure mode of the ACL and its different groups of fibers. The distinct bundles of fibers were marked in each specimen before testing. The macroscopic findings during the experiment were used for comparison with the biomechanical results. Results: The ACL showed a non-monotonic response during testing. The load-elongation curve showed a plateau or a second peak after the initial drop in load. Macroscopically, some fibers were failing initially, whereas the intact fibers had a remaining load potential. In our setting, 3 different failure patterns were recognized, specifically, a midsubstance tear of the anteromedial or the posterolateral bundle with a subsequent failure of the intact bundle or an initial avulsion of the anteromedial attachment. Analysis of the video frames showed a direct connection between the failure patterns in the load-elongation curves and the macroscopic sequence of events during ACL failure. Conclusions: The ACL ligament acts as a multifiber construction. In our setting, rupture follows 3 specific patterns where a complete or partial tear of the fiber bundles occurs first and the remaining intact fiber bundles have a potential load resistance. Clinical Relevance: Our study allows a better understanding of the mechanical properties of the ACL. An update on the biomechanics of ACL failure during uniaxial tension after the "double-bundle revolution" could provide data helpful for ACL reconstruction.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1016/j.arthro.2009.12.013-
heal.identifier.secondary<Go to ISI>://000279759000015-
heal.journalNameArthroscopy-the Journal of Arthroscopic and Related Surgeryen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2010-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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