A quasi-passive knee exoskeleton to assist during descent

Emily Rogers, Panagiotis Polygerinos, Stephen Allen, Fausto A. Panizzolo, Conor J. Walsh, Dónal P. Holland

    Research output: Chapter in Book/Report/Conference proceedingChapter

    13 Scopus citations


    A pneumatic exoskeleton intended to decrease the muscle activity of the knee extensors during walking on a negative slope is presented. The device consists of an air spring that can be engaged and disengaged via a solenoid valve. When engaged, the air spring resists knee flexion. A preliminary evaluation of the device was conducted with a single healthy subject. During testing, the EMG activity of the rectus femoris decreased by 15%, while the EMG activity of the vastus medialis increased by 8%.

    Original languageEnglish (US)
    Title of host publicationBiosystems and Biorobotics
    PublisherSpringer International Publishing
    Number of pages5
    StatePublished - 2017

    Publication series

    NameBiosystems and Biorobotics
    ISSN (Print)2195-3562
    ISSN (Electronic)2195-3570

    ASJC Scopus subject areas

    • Biomedical Engineering
    • Mechanical Engineering
    • Artificial Intelligence


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