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J Neurol Neurosurg Psychiatry 1991;54:165-166 doi:10.1136/jnnp.54.2.165
  • Research Article

Juvenile distal spinal muscular atrophy of upper extremities in Chinese males: a single fibre electromyographic study of arms and legs.

  1. Y W Chan,
  2. R Kay,
  3. M S Schwartz
  1. Department of Medicine, Kwong Wah Hospital, Hong Kong.

      Abstract

      Single fibre electromyography (SFEMG) was performed on six young Chinese males with distal spinal muscular atrophy of the upper extremities. Abnormal SFEMG findings of increased fibre density, jitter and blocking were recorded over both arms and legs in all patients, suggesting a more generalised disturbance than would appear clinically.

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