Rare diseases · Sign or symptom
Ulnar deviation of finger
Finger bends toward pinky
HP:0009465
What it means
Bending or curvature of a finger toward the ulnar side (i.e., away from the thumb). The deviation is at the metacarpal-phalangeal joint, and this finding is distinct from clinodactyly.
Rare diseases that can present with this29
Very common80–99%
11- Brachydactyly type C
- Craniofacial-deafness-hand syndrome
- Freeman-Sheldon syndrome
- Langer mesomelic dysplasia
- Mesomelia-synostoses syndrome
- Mesomelic dwarfism, Reinhardt-Pfeiffer type
- Multiple pterygium-malignant hyperthermia syndrome
- PHAVER syndrome
- Syndactyly type 5
- Ulna hypoplasia-intellectual disability syndrome
- Upper limb mesomelic dysplasia, type Fryns
Common30–79%
12- Abruzzo-Erickson syndrome
- Acrocraniofacial dysostosis
- Anophthalmia-megalocornea-cardiopathy-skeletal anomalies syndrome
- Camptobrachydactyly
- Cataract-intellectual disability-hypogonadism syndrome
- Cleft palate-large ears-small head syndrome
- Costello syndrome
- Diastrophic dysplasia
- Distal arthrogryposis type 1
- Mesomelic dysplasia, Kantaputra type
- Polyneuropathy-intellectual disability-acromicria-premature menopause syndrome
- Sheldon-Hall 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: Ulnar Drift
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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.