Rare diseases · Sign or symptom
Aplasia/Hypoplasia of metatarsal bones
Absent/small long bone of foot
HP:0001964
What it means
Absence or underdevelopment of the metatarsal bones.
Rare diseases that can present with this1
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: Absent or hypoplastic metatarsal · Absent/hypoplastic metacarpals · Absent/hypoplastic metatarsals · Absent/underdeveloped long bone of foot · Aplastic/hypoplastic metatarsals
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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.