crossed polysyndactyly
Findings
No curated finding names crossed polysyndactyly yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Crossed polysyndactyly is a rare, genetic, congenital limb malformation disorder characterized by unilateral or bilateral postaxial polydactyly in the hands and preaxial polydactyly in the feet, associated with bilateral cutaneous syndactyly of first, second and third toes. Cutaneous syndactyly in hands has also been reported in some patients. There have been no further descriptions in the literature since 1994.
Definition from the Mondo Disease Ontology (MONDO:0008286), read 2026-09-29. CC BY 4.0.
Features
11 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Finger syndactylyHPOHP:0006101
- Very frequent (80% to 99% of cases)
- Postaxial hand polydactylyHPOHP:0001162
- Very frequent (80% to 99% of cases)
- Abnormal dermatoglyphicsHPOHP:0007477
- Frequent (30% to 79% of cases)
- Abnormality of the outer earHPOHP:0000356
- Occasional (5% to 29% of cases)
- Abnormality of the philtrumHPOHP:0000288
- Occasional (5% to 29% of cases)
- Aplasia/Hypoplasia of the thumbHPOHP:0009601
- Occasional (5% to 29% of cases)
Where it sits
- A kind of
Other names
1 name
Resolves to: crossed polysyndactyly
- Also called
- crossed polydactyly