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Start free with EleplanDiastrophic dysplasia
ORPHA:628Disease
Also called Diastrophic dwarfism
What it is
A rare osteochondrodysplasia characterized by shortened limbs, normal sized head, short stature with short extremities (final adult height is 120cm +/- 20cm), spinal deformities and joint malformations leading to multiple joint contractures (principally involving the shoulders, elbows, interphalangeal joints and hips). The name indicates the ''twisted'' appearance of the spine and limbs in severe forms that is peculiar of this condition.
Key facts
- Prevalence
- 1-9 / 100 000 (Europe)
- Age of onset
- Antenatal, Neonatal
- Inheritance
- Autosomal recessive
- 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
Very common80–99%
21- Abnormal form of the vertebral bodies
- Abnormality of epiphysis morphology
- Abnormality of the clavicle
- Abnormal metacarpal morphology
- Abnormal metaphysis morphology
- Abnormal rib morphology
- Bowing of the long bones
- Depressed nasal bridge
- Hypoplastic cervical vertebrae
- Increased bone mineral density
- Intrauterine growth retardation
- Large earlobe
- Macrocephaly
- Micromelia
- Midface retrusion
- Neonatal short-limb short stature
- Proximal placement of thumb
- Scoliosis
- Short finger
- Short stature
- Symphalangism affecting the phalanges of the hand
Common30–79%
24- Blue sclerae
- Camptodactyly of finger
- Cervical kyphosis
- Cervical spina bifida
- Cleft palate
- Full cheeks
- Genu valgum
- Hip dysplasia
- Hitchhiker thumb
- Hypertelorism
- Hypotonia
- Joint contracture
- Joint dislocation
- Joint stiffness
- Kyphosis
- Lumbar hyperlordosis
- Overfolded helix
- Posteriorly rotated ears
- Recurrent respiratory infections
- Sandal gap
- Talipes equinovarus
- Thoracolumbar kyphosis
- Ulnar deviation of finger
- Underdeveloped nasal alae
Sometimes5–29%
19- Airway obstruction
- Brachydactyly
- Broad forehead
- Cerebral calcification
- Clinodactyly of the 5th finger
- Cryptorchidism
- Downslanted palpebral fissures
- Elbow dislocation
and 11 more in this range
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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