Rare diseases · Sign or symptom
Synostosis of carpals/tarsals
Wrist bone/ankle bone fusions
HP:0100266
What it means
The carpus consists of the scaphoid, lunate, triquetal, pisiform, captitate, hamate, trapezoid, and trapezium bones. The tarsus consists of the talus, calcaneus, cuboid, cuneiform, and navicular bones. This term applies if there is any fusion among the bones of the carpus or tarsus.
Rare diseases that can present with this1
The 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: Carpal and tarsal fusions · Coalescence of carpal and tarsal bones · Fusion of carpal and tarsal bones
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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.