Facioscapulohumeral muscular dystrophy
Facioscapulohumeral muscular dystrophy can manifest with protruding scapulae, difficulty raising the arms (often asymmetrically) and lifting objects, and progresses to include truncal muscles as well as lower extremity muscles. About 20% of patients are wheelchair dependent after age 50. Inheritance is autosomal dominant in most with a high incidence of sporadic cases due to de novo mutations.
Dec. 28, 2020