Spondylometaphyseal dysplasia-bowed…

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Spondylometaphyseal dysplasia-bowed forearms-facial dysmorphism syndrome

ORPHA:168552Disease

What it is

A rare, genetic, primary bone dysplasia disorder characterized by short stature, hyperlordosis, protuberant abdomen, mild bilateral genu varum, bowed and shortened forearms with limited elbow extension, and discrete facial dysmorphism (prominent forehead, hypertelorism, flat nasal bridge). Radiographically, moderate platyspondyly, including posterior wedging with anterior bullet-shaped vertebral bodies, with minimal metaphyseal abnormalities are observed.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy
Inheritance
Autosomal recessive
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

Q77.8filed under a broader ICD-10 category — shared with 23 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

GARD 8719MESH C535791MONDO 0011856OMIM 607543UMLS C5190708

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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