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    Effect of ACL Deficiency on MCL Strains and Joint Kinematics

    Source: Journal of Biomechanical Engineering:;2007:;volume( 129 ):;issue: 003::page 386
    Author:
    Trevor J. Lujan
    ,
    Michelle S. Dalton
    ,
    Brent M. Thompson
    ,
    Benjamin J. Ellis
    ,
    Jeffrey A. Weiss
    DOI: 10.1115/1.2720915
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The knee joint is partially stabilized by the interaction of multiple ligament structures. This study tested the interdependent functions of the anterior cruciate ligament (ACL) and the medial collateral ligament (MCL) by evaluating the effects of ACL deficiency on local MCL strain while simultaneously measuring joint kinematics under specific loading scenarios. A structural testing machine applied anterior translation and valgus rotation (limits 100N and 10Nm, respectively) to the tibia of ten human cadaveric knees with the ACL intact or severed. A three-dimensional motion analysis system measured joint kinematics and MCL tissue strain in 18 regions of the superficial MCL. ACL deficiency significantly increased MCL strains by 1.8% (p<0.05) during anterior translation, bringing ligament fibers to strain levels characteristic of microtrauma. In contrast, ACL transection had no effect on MCL strains during valgus rotation (increase of only 0.1%). Therefore, isolated valgus rotation in the ACL-deficient knee was nondetrimental to the MCL. The ACL was also found to promote internal tibial rotation during anterior translation, which in turn decreased strains near the femoral insertion of the MCL. These data advance the basic structure-function understanding of the MCL, and may benefit the treatment of ACL injuries by improving the knowledge of ACL function and clarifying motions that are potentially harmful to secondary stabilizers.
    keyword(s): Kinematics , Rotation , Fibers , Anterior cruciate ligament , Knee AND Testing ,
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      Effect of ACL Deficiency on MCL Strains and Joint Kinematics

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    http://yetl.yabesh.ir/yetl1/handle/yetl/135257
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    contributor authorTrevor J. Lujan
    contributor authorMichelle S. Dalton
    contributor authorBrent M. Thompson
    contributor authorBenjamin J. Ellis
    contributor authorJeffrey A. Weiss
    date accessioned2017-05-09T00:22:47Z
    date available2017-05-09T00:22:47Z
    date copyrightJune, 2007
    date issued2007
    identifier issn0148-0731
    identifier otherJBENDY-26706#386_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/135257
    description abstractThe knee joint is partially stabilized by the interaction of multiple ligament structures. This study tested the interdependent functions of the anterior cruciate ligament (ACL) and the medial collateral ligament (MCL) by evaluating the effects of ACL deficiency on local MCL strain while simultaneously measuring joint kinematics under specific loading scenarios. A structural testing machine applied anterior translation and valgus rotation (limits 100N and 10Nm, respectively) to the tibia of ten human cadaveric knees with the ACL intact or severed. A three-dimensional motion analysis system measured joint kinematics and MCL tissue strain in 18 regions of the superficial MCL. ACL deficiency significantly increased MCL strains by 1.8% (p<0.05) during anterior translation, bringing ligament fibers to strain levels characteristic of microtrauma. In contrast, ACL transection had no effect on MCL strains during valgus rotation (increase of only 0.1%). Therefore, isolated valgus rotation in the ACL-deficient knee was nondetrimental to the MCL. The ACL was also found to promote internal tibial rotation during anterior translation, which in turn decreased strains near the femoral insertion of the MCL. These data advance the basic structure-function understanding of the MCL, and may benefit the treatment of ACL injuries by improving the knowledge of ACL function and clarifying motions that are potentially harmful to secondary stabilizers.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEffect of ACL Deficiency on MCL Strains and Joint Kinematics
    typeJournal Paper
    journal volume129
    journal issue3
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.2720915
    journal fristpage386
    journal lastpage392
    identifier eissn1528-8951
    keywordsKinematics
    keywordsRotation
    keywordsFibers
    keywordsAnterior cruciate ligament
    keywordsKnee AND Testing
    treeJournal of Biomechanical Engineering:;2007:;volume( 129 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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