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Start free with EleplanSyndactyly type 5
ORPHA:93406Morphological anomaly
Also called Postaxial syndactyly with metacarpal synostosis · SD5
What it is
A rare non-syndromic syndactyly characterized by soft tissue syndactyly of the 3rd and 4th fingers and the 2nd and 3rd toes associated with metacarpal and metatarsal fusion of the 4th and 5th digits. Shortening of fused metacarpals, ulnar deviation of fingers, interdigital cleft, camptodactyly, short distal phalanges, and absent distal interphalangeal creases have also been reported.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal dominant
- Classified as
- Morphological anomaly
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.
Signs and symptoms
Very common80–99%
4These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
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.
Cross-references
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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