Assessment of a portable device for the quantitative measurement of ankle joint stiffness in spastic individuals

Jakob Lorentzen, Michael James Grey, Svend Sparre Geertsen, Fin Biering-Sørensen, Kelly Brunton, Monica Gorassini, Jens Bo Nielsen

    21 Citations (Scopus)

    Abstract

    OBJECTIVE: Spasticity is a common complication with neurological diseases and CNS lesions. Instrumented systems to evaluate spasticity often cannot provide an immediate result, thus limiting their clinical usefulness. In this study we investigated the accuracy and reliability of the portable Neurokinetics RA1 Ridgidity Analyzer to measure stiffness of the ankle joint in 46 controls, 14 spinal cord injured (SCI) and 23 multiple sclerosis (MS) participants. METHODS: Ankle stiffness measures were made twice by two raters, at speeds above and below the expected stretch reflex threshold. Ankle torque was measured with the portable device and a stationary torque motor. Inter- and intra-rater reliability was assessed with the intra-class correlation coefficient (ICC). RESULTS: Stiffness measures with the portable and stationary devices were significantly correlated for controls and MS participants (p
    Original languageEnglish
    JournalClinical Neurophysiology
    Volume123
    Issue number7
    Pages (from-to)1371-82
    ISSN1388-2457
    DOIs
    Publication statusPublished - 2012

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