How to assess motor impairment in writer's cramp
Identifieur interne : 000302 ( Istex/Corpus ); précédent : 000301; suivant : 000303How to assess motor impairment in writer's cramp
Auteurs : Kirsten E. Zeuner ; Martin Peller ; Arne Knutzen ; Iris Holler ; Alexander Münchau ; Mark Hallett ; Günther Deuschl ; Hartwig R. SiebnerSource :
- Movement Disorders [ 0885-3185 ] ; 2007-06-15.
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Abstract
Writer's cramp is a task‐specific hand dystonia affecting handwriting. Clinical scores such as the Arm Dystonia Disability Scale (ADDS) or Writer's Cramp Rating Scale (WCRS) as well as kinematic analysis of handwriting movements have been used to assess functional impairment in affected patients. In 21 patients with writer's cramp and healthy controls, we analyzed the kinematics of writing and cyclic drawing movements. We rated the severity of dystonia using the ADDS and WCRS and correlated the clinical scores with movement kinematics. Mean stroke frequency was significantly reduced in dystonic patients. Drawing movements showed more frequently a decrease in stroke frequency than handwriting movements. During circle drawing, mean vertical peak velocity was more variable in patients relative to controls, indicating an impaired ability to reproduce the same kinematic pattern over time. An increase in vertical writing pressure was only observed during handwriting but not during circle drawing and may reflect a compensatory effort to stabilize the pencil. Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. Future studies need to address which combination of clinical scores and kinematic measures are most appropriate to quantify impairment in writer's cramp. © 2006 Movement Disorder Society
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DOI: 10.1002/mds.21294
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Clinical scores such as the Arm Dystonia Disability Scale (ADDS) or Writer's Cramp Rating Scale (WCRS) as well as kinematic analysis of handwriting movements have been used to assess functional impairment in affected patients. In 21 patients with writer's cramp and healthy controls, we analyzed the kinematics of writing and cyclic drawing movements. We rated the severity of dystonia using the ADDS and WCRS and correlated the clinical scores with movement kinematics. Mean stroke frequency was significantly reduced in dystonic patients. Drawing movements showed more frequently a decrease in stroke frequency than handwriting movements. During circle drawing, mean vertical peak velocity was more variable in patients relative to controls, indicating an impaired ability to reproduce the same kinematic pattern over time. An increase in vertical writing pressure was only observed during handwriting but not during circle drawing and may reflect a compensatory effort to stabilize the pencil. Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. Future studies need to address which combination of clinical scores and kinematic measures are most appropriate to quantify impairment in writer's cramp. © 2006 Movement Disorder Society</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Kirsten E. Zeuner MD</name><affiliations><json:string>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Martin Peller MD</name><affiliations><json:string>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Arne Knutzen</name><affiliations><json:string>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Iris Holler MD</name><affiliations><json:string>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Alexander Münchau MD</name><affiliations><json:string>Department of Neurology, Hamburg University Hospital, Hamburg, Germany</json:string></affiliations></json:item><json:item><name>Mark Hallett MD</name><affiliations><json:string>Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA</json:string></affiliations></json:item><json:item><name>Günther Deuschl MD</name><affiliations><json:string>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Hartwig R. 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Clinical scores such as the Arm Dystonia Disability Scale (ADDS) or Writer's Cramp Rating Scale (WCRS) as well as kinematic analysis of handwriting movements have been used to assess functional impairment in affected patients. In 21 patients with writer's cramp and healthy controls, we analyzed the kinematics of writing and cyclic drawing movements. We rated the severity of dystonia using the ADDS and WCRS and correlated the clinical scores with movement kinematics. Mean stroke frequency was significantly reduced in dystonic patients. Drawing movements showed more frequently a decrease in stroke frequency than handwriting movements. During circle drawing, mean vertical peak velocity was more variable in patients relative to controls, indicating an impaired ability to reproduce the same kinematic pattern over time. An increase in vertical writing pressure was only observed during handwriting but not during circle drawing and may reflect a compensatory effort to stabilize the pencil. Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. 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Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. 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affiliationRef="#af1"><personName><givenNames>Martin</givenNames><familyName>Peller</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Arne</givenNames><familyName>Knutzen</familyName></personName></creator><creator xml:id="au4" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Iris</givenNames><familyName>Holler</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au5" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Alexander</givenNames><familyName>Münchau</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au6" creatorRole="author" affiliationRef="#af3"><personName><givenNames>Mark</givenNames><familyName>Hallett</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au7" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Günther</givenNames><familyName>Deuschl</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au8" creatorRole="author" affiliationRef="#af1 #af4"><personName><givenNames>Hartwig R.</givenNames><familyName>Siebner</familyName><degrees>MD</degrees></personName></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="DE" type="organization"><unparsedAffiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</unparsedAffiliation></affiliation><affiliation xml:id="af2" countryCode="DE" type="organization"><unparsedAffiliation>Department of Neurology, Hamburg University Hospital, Hamburg, Germany</unparsedAffiliation></affiliation><affiliation xml:id="af3" countryCode="US" type="organization"><unparsedAffiliation>Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA</unparsedAffiliation></affiliation><affiliation xml:id="af4" countryCode="DE" type="organization"><unparsedAffiliation>NeuroImageNord Kiel–Hamburg–Lübeck, Germany</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">Arm Dystonia Disability Scale</keyword><keyword xml:id="kwd2">focal hand dystonia</keyword><keyword xml:id="kwd3">writer's cramp</keyword><keyword xml:id="kwd4">Writer's Cramp Rating Scale</keyword><keyword xml:id="kwd5">kinematic handwriting analysis</keyword></keywordGroup><fundingInfo><fundingAgency>Deutsche Forschungsgemeinschaft</fundingAgency><fundingNumber>DE 438/7‐1</fundingNumber><fundingNumber>7‐2</fundingNumber></fundingInfo><fundingInfo><fundingAgency>Federal Ministry of Education and Research</fundingAgency><fundingNumber>01 GO 0511</fundingNumber></fundingInfo><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>Writer's cramp is a task‐specific hand dystonia affecting handwriting. Clinical scores such as the Arm Dystonia Disability Scale (ADDS) or Writer's Cramp Rating Scale (WCRS) as well as kinematic analysis of handwriting movements have been used to assess functional impairment in affected patients. In 21 patients with writer's cramp and healthy controls, we analyzed the kinematics of writing and cyclic drawing movements. We rated the severity of dystonia using the ADDS and WCRS and correlated the clinical scores with movement kinematics. Mean stroke frequency was significantly reduced in dystonic patients. Drawing movements showed more frequently a decrease in stroke frequency than handwriting movements. During circle drawing, mean vertical peak velocity was more variable in patients relative to controls, indicating an impaired ability to reproduce the same kinematic pattern over time. An increase in vertical writing pressure was only observed during handwriting but not during circle drawing and may reflect a compensatory effort to stabilize the pencil. Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. Future studies need to address which combination of clinical scores and kinematic measures are most appropriate to quantify impairment in writer's cramp. © 2006 Movement Disorder Society</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><!--Version 0.6 générée le 4-12-2015--><mods version="3.6"><titleInfo lang="en"><title>How to assess motor impairment in writer's cramp</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Motor Impairment in Writer's Cramp</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>How to assess motor impairment in writer's cramp</title></titleInfo><name type="personal"><namePart type="given">Kirsten E.</namePart><namePart type="family">Zeuner</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><description>Correspondence: Department of Neurology, Christian Albrechts University Kiel, Neurozentrum, Schittenhelmstrasse 10, 24105 Kiel, Germany</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Martin</namePart><namePart type="family">Peller</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Arne</namePart><namePart type="family">Knutzen</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Iris</namePart><namePart type="family">Holler</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alexander</namePart><namePart type="family">Münchau</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Hamburg University Hospital, Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Mark</namePart><namePart type="family">Hallett</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Human Motor Control Section, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Günther</namePart><namePart type="family">Deuschl</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Hartwig R.</namePart><namePart type="family">Siebner</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, Christian Albrechts University Kiel, Kiel, Germany</affiliation><affiliation>NeuroImageNord Kiel–Hamburg–Lübeck, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre authority="originalCategForm">article</genre><originInfo><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><place><placeTerm type="text">Hoboken</placeTerm></place><dateIssued encoding="w3cdtf">2007-06-15</dateIssued><dateCaptured encoding="w3cdtf">2006-04-11</dateCaptured><dateValid encoding="w3cdtf">2006-09-25</dateValid><copyrightDate encoding="w3cdtf">2007</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">3</extent><extent unit="tables">3</extent><extent unit="references">29</extent><extent unit="words">5471</extent></physicalDescription><abstract lang="en">Writer's cramp is a task‐specific hand dystonia affecting handwriting. Clinical scores such as the Arm Dystonia Disability Scale (ADDS) or Writer's Cramp Rating Scale (WCRS) as well as kinematic analysis of handwriting movements have been used to assess functional impairment in affected patients. In 21 patients with writer's cramp and healthy controls, we analyzed the kinematics of writing and cyclic drawing movements. We rated the severity of dystonia using the ADDS and WCRS and correlated the clinical scores with movement kinematics. Mean stroke frequency was significantly reduced in dystonic patients. Drawing movements showed more frequently a decrease in stroke frequency than handwriting movements. During circle drawing, mean vertical peak velocity was more variable in patients relative to controls, indicating an impaired ability to reproduce the same kinematic pattern over time. An increase in vertical writing pressure was only observed during handwriting but not during circle drawing and may reflect a compensatory effort to stabilize the pencil. Kinematic measures and individual ADDS and WCRS scores did not correlate with each other. The lack of correlation is not surprising as ADDS, WCRS, and kinematic analysis probe different aspects of motor impairment. The ADDS characterizes how dystonia affects a set of fine manual tasks, whereas the WCRS scores the manifestation of dystonia during handwriting. Therefore, the clinical scores and kinematic analysis of handwriting provide complementary insights into motor impairment. Future studies need to address which combination of clinical scores and kinematic measures are most appropriate to quantify impairment in writer's cramp. © 2006 Movement Disorder Society</abstract><note type="funding">Deutsche Forschungsgemeinschaft - No. DE 438/7‐1; No. 7‐2; </note><note type="funding">Federal Ministry of Education and Research - No. 01 GO 0511; </note><subject lang="en"><genre>Keywords</genre><topic>Arm Dystonia Disability Scale</topic><topic>focal hand dystonia</topic><topic>writer's cramp</topic><topic>Writer's Cramp Rating Scale</topic><topic>kinematic handwriting analysis</topic></subject><relatedItem type="host"><titleInfo><title>Movement Disorders</title></titleInfo><titleInfo type="abbreviated"><title>Mov. Disord.</title></titleInfo><subject><genre>article category</genre><topic>Research Article</topic></subject><identifier type="ISSN">0885-3185</identifier><identifier type="eISSN">1531-8257</identifier><identifier type="DOI">10.1002/(ISSN)1531-8257</identifier><identifier type="PublisherID">MDS</identifier><part><date>2007</date><detail type="volume"><caption>vol.</caption><number>22</number></detail><detail type="issue"><caption>no.</caption><number>8</number></detail><extent unit="pages"><start>1102</start><end>1109</end><total>8</total></extent></part></relatedItem><identifier type="istex">D1EAD2B4BC05BCB1B5A2DAF52DFAE8E4522FBE41</identifier><identifier type="DOI">10.1002/mds.21294</identifier><identifier type="ArticleID">MDS21294</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2006 Movement Disorder Society</accessCondition><recordInfo><recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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