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Dyssegmental dysplasia, Silverman-Handmaker type

Disease definition

Dyssegmental dysplasia, Silverman-Handmaker type is a rare, genetic, primary bone dysplasia disorder, and lethal form of neonatal short-limbed dwarfism, characterized by anisospondyly, severe short stature and limb shortening, metaphyseal flaring and distinct dysmorphic features (i.e. flat facial appearance, abnormal ears, short neck, narrow thorax). Additional features may include other skeletal findings (e.g. joint contractures, bowed limbs, talipes equinovarus) and urogenital and cardiovascular abnormalities.


Classification level: Disorder
  • Synonym(s): -
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal recessive 
  • Age of onset: Antenatal, Neonatal
  • ICD-10: Q77.7
  • ICD-11: LD24.3
  • OMIM: 224410
  • UMLS: -
  • MeSH: C537998
  • GARD: 2026
  • MedDRA: -
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