Rare diseases · Sign or symptom
Rhizomelic arm shortening
HP:0004991
What it means
Disproportionate shortening of the proximal segment of the arm (i.e. the humerus).
This term implies that the ulna and radius are not substantially shortened.
Rare diseases that can present with this5
Very common80–99%
2The 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.