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Start free with EleplanAneurysm-osteoarthritis syndrome
ORPHA:284984Disease
What it is
A rare, genetic, systemic disease characterized by the presence of arterial aneurysms, tortuosity and dissection throughout the arterial tree, associated with early-onset osteoarthritis (predominantly affecting the spine, hands and/or wrists, and knees) and mild craniofacial dysmorphism (incl. long face, high forehead, flat supraorbital ridges, hypertelorism, malar hypoplasia and, anomalies of the palate and uvula), as well as mild skeletal and cutaneous anomalies. Joint abnormalities, such as osteochondritis dissecans and intervertebral disc degeneration, are frequently associated. Additional cardiovascular anomalies may include mitral valve defects, congenital heart malformations, ventricular hypertrophy and atrial fibrillation.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- All ages
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
29- Abnormality of bladder morphology
- Aortic dissection
- Aortic regurgitation
- Arachnodactyly
- Arterial dissection
- Arterial tortuosity
- Atypical scarring of skin
- Bifid uvula
- Bruising susceptibility
- Chronic fatigue
- Dental malocclusion
- Dilatation of the cerebral artery
- Headache
- High forehead
- High palate
- Hypertelorism
- Inguinal hernia
- Knee osteoarthritis
- Long face
- Malar flattening
- Migraine
- Mitral regurgitation
- Osteoarthritis
- Osteoarthritis of the small joints of the hand
- Protrusio acetabuli
- Scoliosis
- Striae distensae
- Umbilical hernia
- Uterine prolapse
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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