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New method for the estimation of the number of motor units in a muscle
  1. John P. Ballantyne,
  2. Stig Hansen
  1. Glasgow University Department of Neurology, Institute of Neurological Sciences, Southern General Hospital, Glasgow
  2. The Department of Clinical Physics and Bio-engineering

    2. Duchenne, limb-girdle and facioscapulohumeral, and myotonic muscular dystrophies

    Abstract

    The results of the application of a computerized method for the estimation of motor unit numbers in the human extensor digitorum brevis are presented. In patients with Duchenne and limb-girdle and facioscapulohumeral muscular dystrophies, motor unit numbers are within the normal range, but are significantly reduced in myotonic muscular dystrophy.

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    2. Duchenne, limb-girdle and facioscapulohumeral, and myotonic muscular dystrophies