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

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

doi:10.1016/j.clinph.2011.11.001

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

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

17 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 language	English
Journal	Clinical Neurophysiology
Volume	123
Issue number	7
Pages (from-to)	1371-1382
Number of pages	12
ISSN	1388-2457
DOIs	https://doi.org/10.1016/j.clinph.2011.11.001
Publication status	Published - Jul 2012

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title = "Assessment of a portable device for the quantitative measurement of ankle joint stiffness in spastic individuals",

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",

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T1 - Assessment of a portable device for the quantitative measurement of ankle joint stiffness in spastic individuals

AU - Lorentzen, Jakob

AU - Grey, Michael J

AU - Geertsen, Svend Sparre

AU - Biering-Sørensen, Fin

AU - Brunton, Kelly

AU - Gorassini, Monica

AU - Nielsen, Jens Bo

N1 - CURIS 2012 5200 008

PY - 2012/7

Y1 - 2012/7

N2 - 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

AB - 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

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DO - 10.1016/j.clinph.2011.11.001

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JO - Clinical Neurophysiology

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

Abstract

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