Rare diseases · Sign or symptom
Radioulnar dislocation
HP:0006439
What it means
A dislocation is a separation of the radius and ulna bones where they normally meet. The radioulnar joints are two locations, proximal and distal, in which the radius and ulna articulate in the forearm. Both can dislocate.
This term refers to any kind of radioulnar joint dislocation (proximal, distal, both, or unknown).
Rare diseases that can present with this4
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: Dislocated radioulnar joints
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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.