| Reliability and validity of the Medical Research Council (MRC) scale and a modified scale for testing muscle strength in patients with radial palsy. | |
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MedLine Citation:
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PMID: 19020701 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To assess the inter-rater and intra-rater reliability and validity of the original and a modified Medical Research Council scale for testing muscle strength in radial palsy. DESIGN: Prospective, randomized validation study. PATIENTS: Thirty-one patients with peripheral paresis of radial innervated forearm muscles were included. METHODS: Wrist extension, finger extension and grip strength were evaluated by manual muscle testing. Dynamometric measurement of grip strength was performed. Pair-wise weighted kappa coefficients were calculated to determine inter-rater and intra-rater reliability. The 2 scores were compared using the signed-rank test. Spearman's correlation coefficients of the maximal relative force measurements with the median (over-raters) Medical Research Council and modified Medical Research Council scores were calculated to determine validity. RESULTS: Inter-rater agreement of the Medical Research Council scale (finger extension: 0.77; wrist extension: 0.78; grip strength: 0.78) and the modified Medical Research Council scale (finger extension: 0.81; wrist extension: 0.78; grip strength: 0.81) as well as intra-rater agreement of the Medical Research Council scale (finger extension: 0.86; wrist extension: 0.82; grip strength: 0.84) and the modified Medical Research Council scale (finger extension: 0.84, wrist extension: 0.81; grip strength: 0.88) showed almost perfect agreement. Spearman's correlation coefficients of the maximal relative force measurements with the median Medical Research Council and modified Medical Research Council score were both 0.78. CONCLUSION: Medical Research Council and modified Medical Research Council scales are measurements with substantial inter-rater and intra-rater reliability in evaluating forearm muscles. |
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Authors:
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Tatjana Paternostro-Sluga; Martina Grim-Stieger; Martin Posch; Othmar Schuhfried; Gerda Vacariu; Christian Mittermaier; Christian Bittner; Veronika Fialka-Moser |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine Volume: 40 ISSN: 1651-2081 ISO Abbreviation: J Rehabil Med Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-11-21 Completed Date: 2008-12-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101088169 Medline TA: J Rehabil Med Country: Sweden |
Other Details:
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Languages: eng Pagination: 665-71 Citation Subset: IM |
Affiliation:
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Department of Physical Medicine and Rehabilitation, Medical University of Vienna, Austria. tatjana.paternostro-sluga@akhwien.at |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Hand Strength / physiology Humans Male Middle Aged Muscle Strength / physiology* Muscle Weakness / physiopathology*, rehabilitation Observer Variation Prospective Studies Radial Neuropathy / physiopathology*, rehabilitation Reproducibility of Results |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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