8B61.2 Juvenile form spinal muscular dystrophy, Type III

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

In SMA type 3, weakness of muscles is seen after 18 months of age. The child is able to sit and stand independently. There is a limb girdle-type of distribution of weakness causing waddling gait, falls, and difficulty with running. The ability to walk may be lost, requiring a wheelchair as the disease progresses. The life expectancy may be normal.

postcoordination

synonyms

• Juvenile form spinal muscular dystrophy, Type III
• Kugelberg-Welander Disease

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