Rare diseases · Sign or symptom
Tarsal synostosis
Fused ankle bones
HP:0008368
What it means
Synostosis (bony fusion) involving one or more bones of the tarsus (calcaneus, talus, cuboid, navicular, cuneiiform bones).
Rare diseases that can present with this29
Very common80–99%
14- Acromesomelic dysplasia, Grebe type
- Acromesomelic dysplasia, Hunter-Thompson type
- Acropectorovertebral dysplasia
- Cleft palate-stapes fixation-oligodontia syndrome
- Craniosynostosis-anal anomalies-porokeratosis syndrome
- Dermatoosteolysis, Kirghizian type
- Dysplasia epiphysealis hemimelica
- Fibular aplasia-complex brachydactyly syndrome
- Laurin-Sandrow syndrome
- Mesomelic dysplasia, Kantaputra type
- Mesomelic dysplasia, Nievergelt type
- Proximal symphalangism
- Tarsal-carpal coalition syndrome
- Verloove Vanhorick-Brubakk syndrome
Common30–79%
6Sometimes5–29%
8The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Synostosis involving tarsal bones · Synostosis of tarsal bones · Tarsal bone fusion · Tarsal bone synostosis · Tarsal fusion · Tarsal fusions
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.