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Methods of evaluation of musician's dystonia: Critique of measurement tools

Authors

  • June T. Spector MD,

    Corresponding author
    1. Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
    • Department of Medicine, Hospital of the University of Pennsylvania, 100 Centrex, 3400 Spruce Street, Philadelphia, PA 19014-4283
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  • Alice G. Brandfonbrener MD

    1. Medical Program for Performing Artists of the Rehabilitation Institute of Chicago, Chicago, Illinois, USA
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Abstract

Musician's dystonia is associated with significant morbidity. To assess treatment options, accurate and precise measurements of disease severity are critical. We describe current methods of quantitatively measuring musician's dystonia of the upper extremity including subjective, objective, and automated methods. The degree to which these methods satisfy rigorous measurement criteria, including their reliability, validity, responsiveness to treatment, and practicality, is examined. We report that most of these methods have not been properly evaluated. Therefore, treatment trials based on these methods are difficult to interpret. © 2006 Movement Disorder Society

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