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    Comparing Patellofemoral Kinematics Assessed With a Novel Muscle Actuator System and an Oxford Rig Using Noncadaveric Knees

    Source: Journal of Biomechanical Engineering:;2025:;volume( 147 ):;issue: 003::page 31003-1
    Author:
    Galley, Alexandre
    ,
    Vakili, Samira
    ,
    Borukhov, Ilya
    ,
    Lanting, Brent
    ,
    Piazza, Stephen J.
    ,
    Willing, Ryan
    DOI: 10.1115/1.4067400
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Total knee replacement (TKR) failure, low patient satisfaction and high revision surgery rates may stem from insufficient preclinical testing. Conventional joint motion simulators for preclinical testing of TKR implants manipulate a knee joint in force, displacement, or simulated muscle control. However, a rig capable of using all three control modes has yet to be described in literature. This study aimed to validate a novel platform, the muscle actuator system (MAS), that can generate gravity-dependent, quadriceps-controlled squatting motions representative of an Oxford rig knee simulator and is mounted onto a force/displacement-control-capable joint motion simulator. Synthetic knee joint phantoms were created that comprised revision TKR implants and key extensor and flexor mechanism analogues, but no ligaments. The combined system implemented a constant force vector acting from simulated hip-to-ankle coordinates, effectively replicating gravity as observed in an Oxford rig. Quadriceps forces and patellofemoral joint kinematics were measured to assess the performance of the MAS and these tests showed high levels of repeatability and reproducibility. Forces and kinematics measured at a nominal patellar tendon length, and with patella alta and baja, were compared against those measured under the same conditions using a conventional Oxford rig, the Pennsylvania State Knee Simulator (PSKS). There was disagreement in absolute kinematics and muscle forces, but similar trends resulting from changing prosthesis design or patellar tendon length.
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      Comparing Patellofemoral Kinematics Assessed With a Novel Muscle Actuator System and an Oxford Rig Using Noncadaveric Knees

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4305173
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    • Journal of Biomechanical Engineering

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    contributor authorGalley, Alexandre
    contributor authorVakili, Samira
    contributor authorBorukhov, Ilya
    contributor authorLanting, Brent
    contributor authorPiazza, Stephen J.
    contributor authorWilling, Ryan
    date accessioned2025-04-21T09:56:54Z
    date available2025-04-21T09:56:54Z
    date copyright1/17/2025 12:00:00 AM
    date issued2025
    identifier issn0148-0731
    identifier otherbio_147_03_031003.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305173
    description abstractTotal knee replacement (TKR) failure, low patient satisfaction and high revision surgery rates may stem from insufficient preclinical testing. Conventional joint motion simulators for preclinical testing of TKR implants manipulate a knee joint in force, displacement, or simulated muscle control. However, a rig capable of using all three control modes has yet to be described in literature. This study aimed to validate a novel platform, the muscle actuator system (MAS), that can generate gravity-dependent, quadriceps-controlled squatting motions representative of an Oxford rig knee simulator and is mounted onto a force/displacement-control-capable joint motion simulator. Synthetic knee joint phantoms were created that comprised revision TKR implants and key extensor and flexor mechanism analogues, but no ligaments. The combined system implemented a constant force vector acting from simulated hip-to-ankle coordinates, effectively replicating gravity as observed in an Oxford rig. Quadriceps forces and patellofemoral joint kinematics were measured to assess the performance of the MAS and these tests showed high levels of repeatability and reproducibility. Forces and kinematics measured at a nominal patellar tendon length, and with patella alta and baja, were compared against those measured under the same conditions using a conventional Oxford rig, the Pennsylvania State Knee Simulator (PSKS). There was disagreement in absolute kinematics and muscle forces, but similar trends resulting from changing prosthesis design or patellar tendon length.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleComparing Patellofemoral Kinematics Assessed With a Novel Muscle Actuator System and an Oxford Rig Using Noncadaveric Knees
    typeJournal Paper
    journal volume147
    journal issue3
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.4067400
    journal fristpage31003-1
    journal lastpage31003-13
    page13
    treeJournal of Biomechanical Engineering:;2025:;volume( 147 ):;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
    yabeshDSpacePersian