Brain, Vol 120, Issue 11 1989-1996, Copyright © 1997 by Oxford University Press
WH Linssen, NC Notermans, Y Van der Graaf, JH Wokke, PA Van Doorn, CJ Howeler, HF Busch, AE De Jager and M De Visser
Miyoshi-type distal muscular dystrophy has now been found to be more
frequent outside Japan than was previously thought. We studied 24 Dutch
patients with Miyoshi-type distal muscular dystrophy and focused on its
clinical expression and natural history, muscle CT-scans and muscle biopsy
findings. Our study shows that Miyoshi myopathy is a heterogeneous, slowly
progressive disorder. The disease starts with weakness and atrophy of the
calves and progressively involves the proximal leg and hip muscles and, in
a later stage the shoulder and upper arm muscles. After 10 years disease
duration, one-third of the patients are dependent on wheelchairs for
out-of-door transportation. Disease progression is related to disease
duration and not to early age of onset of symptoms. Onset may be at any age
and is asymmetrical in roughly half of the cases. Four cases had been
initially diagnosed as idiopathic hyper-CK-aemia.
ARTICLES
Miyoshi-type distal muscular dystrophy. Clinical spectrum in 24 Dutch patients
Department of Neurology, St Lucas Andreas Hospital, Amsterdam, The Netherlands.
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