Muscle MRI findings in spinal muscular atrophy type 3

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The spinal muscular atrophies (SMAs) implicate a group of autosomal-recessive disorders characterized by progressive weakness of the lower motor neurons. SMA type 3 is a milder form that clinical symptoms appear between 18 months and 18 years of age. It is characterized by slowly progressive proximal weakness. The lower extremities are often more severely affected than the upper extremities. The aim of this study was to analyze MRI findings of muscles of the pelvic girdle and lower limbs in patients with SMA type 3.

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