Rare diseases · Sign or symptom
Abnormal morphology of ulna
HP:0040071
What it means
Any structural anomaly of the ulna, a bone of the forearm the extends from the elbow to the little finger.
Rare diseases that can present with this33
Very common80–99%
14- Brachydactyly-elbow wrist dysplasia syndrome
- Camurati-Engelmann disease
- Femur-fibula-ulna complex
- Fibular aplasia-complex brachydactyly syndrome
- Heart-hand syndrome type 2
- Hypogonadism-mitral valve prolapse-intellectual disability syndrome
- Isolated radio-ulnar synostosis
- Langer mesomelic dysplasia
- Léri-Weill dyschondrosteosis
- Mesomelic dwarfism, Reinhardt-Pfeiffer type
- Mesomelic dysplasia, Nievergelt type
- Metaphyseal anadysplasia
- Metaphyseal chondrodysplasia, Rosenberg type
- Robin sequence-oligodactyly syndrome
Common30–79%
7The 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
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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.