Rare diseases · Sign or symptom
Upper limb undergrowth
Short arms
HP:0009824
What it means
Arm shortening because of underdevelopment of one or more bones of the upper extremity.
Rare diseases that can present with this13
Common30–79%
8- 17q24.2microdeletion syndrome
- Atelosteogenesis type II
- Intellectual disability-seizures-hypophosphatasia-ophthalmic-skeletal anomalies syndrome
- Multiple epiphyseal dysplasia type 4
- Spondyloepiphyseal dysplasia congenita
- Spondylometaphyseal dysplasia, 'corner fracture' type
- Wormian bone-multiple fractures-dentinogenesis imperfecta-skeletal dysplasia
- X small rings syndrome
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: Hypoplasia involving bones of the upper limbs · Shortening of the arms
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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.