Movement Disorders (revue)

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Etiological musculo-skeletal factor in focal dystonia in a musician's hand : A case study of the right hand of a guitarist

Identifieur interne : 001791 ( PascalFrancis/Curation ); précédent : 001790; suivant : 001792

Etiological musculo-skeletal factor in focal dystonia in a musician's hand : A case study of the right hand of a guitarist

Auteurs : Joris N. A. L. Leijnse [États-Unis] ; Mark Hallett [États-Unis]

Source :

RBID : Pascal:07-0491132

Descripteurs français

English descriptors

Abstract

A case study is presented in which a focal hand dystonia seems to have developed in the right hand of a classical guitarist as a result of a neuromuscular peripheral defect caused by trauma. The trauma was a near total perforation of the first web space by a splinter. Healing was uneventful without apparent functional complications. Two years later the patient noticed difficulties in extending the index in playing, for which he received various unsuccessful treatments during seven years. However, we found more severe dystonic symptoms (cocontractions) in the thumb than in the index during playing, which correlated with an undiagnosed insufficiency in the flexor pollicis brevis (FPB). This defect allowed proposing a biomechanical analysis of compensations for diminished thumb control in playing, which would explain the dysfunction in the index in playing as overcompensation for the thumb problem. If this analysis is correct, the etiology of the case can be traced back to underlying multiarticular control problems in the thumb caused by an insufficient FPB. This defect was considered irrepairable. It was concluded that even with knowledge of the underlying cause, a potentially successful treatment of the dystonia might not exist in this case. The case would demonstrate that task-specific hand dystonias can arise as overcompensations for (peripheral) neuro-musculoskeletal defects. The case is illustrated by videos of playing and functional thumb tests.
pA  
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A08 01  1  ENG  @1 Etiological musculo-skeletal factor in focal dystonia in a musician's hand : A case study of the right hand of a guitarist
A11 01  1    @1 LEIJNSE (Joris N. A. L.)
A11 02  1    @1 HALLETT (Mark)
A14 01      @1 Laboratory for Clinical Biomechanics and Reconstructive Surgery of Hand and Upper Limb, University of Louisville @2 Louisville, Kentucky @3 USA @Z 1 aut.
A14 02      @1 Department of Mechanical Engineering, Speed School for Engineering & Price Institute for Surgical Research, University of Louisville @2 Louisville, Kentucky @3 USA @Z 1 aut.
A14 03      @1 Department of Surgery, University of Louisville @2 Louisville, Kentucky @3 USA @Z 1 aut.
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C01 01    ENG  @0 A case study is presented in which a focal hand dystonia seems to have developed in the right hand of a classical guitarist as a result of a neuromuscular peripheral defect caused by trauma. The trauma was a near total perforation of the first web space by a splinter. Healing was uneventful without apparent functional complications. Two years later the patient noticed difficulties in extending the index in playing, for which he received various unsuccessful treatments during seven years. However, we found more severe dystonic symptoms (cocontractions) in the thumb than in the index during playing, which correlated with an undiagnosed insufficiency in the flexor pollicis brevis (FPB). This defect allowed proposing a biomechanical analysis of compensations for diminished thumb control in playing, which would explain the dysfunction in the index in playing as overcompensation for the thumb problem. If this analysis is correct, the etiology of the case can be traced back to underlying multiarticular control problems in the thumb caused by an insufficient FPB. This defect was considered irrepairable. It was concluded that even with knowledge of the underlying cause, a potentially successful treatment of the dystonia might not exist in this case. The case would demonstrate that task-specific hand dystonias can arise as overcompensations for (peripheral) neuro-musculoskeletal defects. The case is illustrated by videos of playing and functional thumb tests.
C02 01  X    @0 002B17
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C03 01  X  FRE  @0 Système nerveux pathologie @5 01
C03 01  X  ENG  @0 Nervous system diseases @5 01
C03 01  X  SPA  @0 Sistema nervioso patología @5 01
C03 02  X  FRE  @0 Dystonie @5 02
C03 02  X  ENG  @0 Dystonia @5 02
C03 02  X  SPA  @0 Distonía @5 02
C03 03  X  FRE  @0 Musicien @5 09
C03 03  X  ENG  @0 Musician @5 09
C03 03  X  SPA  @0 Músico @5 09
C03 04  X  FRE  @0 Main @5 10
C03 04  X  ENG  @0 Hand @5 10
C03 04  X  SPA  @0 Mano @5 10
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C03 05  X  ENG  @0 Case study @5 11
C03 05  X  SPA  @0 Estudio caso @5 11
C03 06  X  FRE  @0 Biomécanique @5 12
C03 06  X  ENG  @0 Biomechanics @5 12
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C07 01  X  ENG  @0 Extrapyramidal syndrome @5 37
C07 01  X  SPA  @0 Extrapiramidal síndrome @5 37
C07 02  X  FRE  @0 Mouvement involontaire @5 38
C07 02  X  ENG  @0 Involuntary movement @5 38
C07 02  X  SPA  @0 Movimiento involuntario @5 38
C07 03  X  FRE  @0 Muscle strié pathologie @5 39
C07 03  X  ENG  @0 Striated muscle disease @5 39
C07 03  X  SPA  @0 Músculo estriado patología @5 39
C07 04  X  FRE  @0 Trouble neurologique @5 40
C07 04  X  ENG  @0 Neurological disorder @5 40
C07 04  X  SPA  @0 Trastorno neurológico @5 40
C07 05  X  FRE  @0 Encéphale pathologie @5 41
C07 05  X  ENG  @0 Cerebral disorder @5 41
C07 05  X  SPA  @0 Encéfalo patología @5 41
C07 06  X  FRE  @0 Système nerveux central pathologie @5 42
C07 06  X  ENG  @0 Central nervous system disease @5 42
C07 06  X  SPA  @0 Sistema nervosio central patología @5 42
N21       @1 323
N44 01      @1 OTO
N82       @1 OTO

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   |type=    RBID
   |clé=     Pascal:07-0491132
   |texte=   Etiological musculo-skeletal factor in focal dystonia in a musician's hand : A case study of the right hand of a guitarist
}}

Wicri

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