Rare diseases · Sign or symptom
3-4 finger osseus syndactyly
Webbed 3rd-4th fingers
HP:0006097
What it means
Fusion of the third (middle) and fourth (ring) finger, involving soft parts and including fusion of individual finger bones.
Rare diseases that can present with this5
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: Partial or complete syndactyly 3rd-4th fingers · Webbed 3rd-4th finger
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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.