Rare diseases · Sign or symptom

Short middle phalanx of the 5th finger

Short middle bone of the little finger

HP:0004220

What it means

Hypoplastic/small middle phalanx of the fifth finger.

Brachymesophalangia-V, a short and broad middle phalanx of the fifth digit, is the most common of all skeletal anomalies of the hand. When this feature appears alone, it is clinically known as brachydactyly type A3 (BDA3).

Rare diseases that can present with this9

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: 5th finger middle phalangeal hypoplasia · Brachymesophalangism V · Brachymesophalangy V (finger) · Fifth finger mid-phalanx hypoplasia · Hypoplastic fifth finger middle phalanx · Hypoplastic middle phalanx of the 5th finger · Hypoplastic/small middle phalanx of the 5th finger · Hypoplastic/small middle phalanx of the little finger

Short middle phalanx of the 5th finger

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This 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.