What is the prevalence of focal muscular atrophy (FMA) in the US?

Updated: Feb 20, 2018
  • Author: Sridharan Ramaratnam, MD, MBBS; Chief Editor: Helmi L Lutsep, MD  more...
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FMA is a heterogenous disorder with diverse etiologies, so overall prevalence rates are not available.

An estimated 1.63 million polio survivors reside in the US; 28-50% of them will develop postpolio progressive muscular atrophy (PPMA). [1, 2]

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