Which physical findings are characteristic of type III spinal muscle atrophy (SMA)?

Updated: Nov 05, 2018
  • Author: Ashish S Ranade, MBBS, MS, MRCS; Chief Editor: Jeffrey A Goldstein, MD  more...
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Patients with type III SMA walk early in life and maintain their ambulatory capacity into adolescence. Weakness may cause foot drop, and patients have limited endurance. A third of the patients become wheelchair bound as adults (mean age, 40 years).

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