raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:166029

Multiple epiphyseal dysplasia-severe proximal femoral dysplasia syndrome

Type
Disease
Group
Disorder
Age of onset
Childhood
Status
active

Multiple epiphyseal dysplasia, with severe proximal femoral dysplasia is a rare primary bone dysplasia characterized by severe, early-onset dysplasia of the proximal femurs, with almost complete absence of the secondary ossification centers and abnormal development of the femoral necks (short and broad with irregular metaphyses). It is associated with gait abnormality, mild short stature, arthralgia, joint stiffness with limited mobility of the hips and irregular acetabula, and hip and knee pain. Coxa vara and mild spinal changes are also associated.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMultiple epiphyseal dysplasia-severe proximal femoral dysplasia syndrome
frSyndrome de dysplasie épiphysaire multiple-dysplasie fémorale sévère
deMultiple epiphysäre Dysplasie-schwere proximale Femur-Dysplasie-SyndromSyndrom der multiplen epiphysären Dysplasie mit Dysplasie der proximalen Oberschenkelknochen
esSíndrome de displasia epifisaria múltiple-displasia femoral proximal grave
itSindrome displasia epifisaria multipla-displasia grave della porzione prossimale del femore
nlMultipele epifysaire dysplasie - ernstige proximale femorale dysplasie-syndroom
ptSíndrome de displasia epifisária múltipla-displasia femoral proximal grave
plDysplazja wielonasadowa z ciężką proksymalną dysplazją kości udowejZespół dysplazja wielonasadowa – ciężka dysplazja bliższego odcinka kości udowej
csMnohočetná epifyzární dysplázie s těžkou proximální dysplázií femuru
ukСиндром множинної епіфізарної дисплазії-тяжкої дисплазії проксимального відділу стегнової кістки
zh多发性骨骺发育不良伴重度股骨近端发育不良
trAğır proksimal femoral displazi ile seyreden çoklu epifizyel displazi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM609324Evalidated
ICD-10Q77.3NTBTattributedvalidated
ICD-11LD24.61NTBTindexvalidated
MONDO0012253Evalidated
MeSHC563736Evalidated
UMLSC5924993Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated15523498[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_15523498[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card