raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2019

Femur-fibula-ulna complex

Synonyms: FFU complex · Femur-fibula-ulna dysostosis · Femur-fibula-ulna syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable
Age of onset
Antenatal, Neonatal
Status
active

A rare congenital limb malformation syndrome characterized by a highly variable combination of congenital anomalies of the femur, fibula, and/or ulna, which can appear along with finger/toe anomalies at the ulnar/fibular side. Limb defects are asymmetrical, with upper limbs more often affected than lower limbs, and the right side of the body more often affected than the left. Abnormalities of the upper limb include amelia, hypoplasia of the humerus, humero-radial synostosis, and malformation of the ulna and ulnar rays. Abnormalities of the lower limb include absence of the proximal part of the femur and absence of the fibula. Axial skeleton, internal organs and intellectual function are usually normal.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFemur-fibula-ulna complexFFU complex · Femur-fibula-ulna dysostosis · Femur-fibula-ulna syndrome
frComplexe fémoro-péronéo-cubitalComplexe FFU · Dysostose fémoro-péronéo-cubitale · Syndrome fémoro-péronéo-cubital
deFemur-Fibula-Ulna-KomplexFFU-Komplex · Femur-Fibula-Ulna-Dysostose · Femur-Fibula-Ulna-Syndrom
esComplejo fémur-peroné-cúbitoComplejo FFU · Complejo fémur-fíbula-ulna · Disostosis fémur-peroné-cúbito · Síndrome fémur-fíbula-ulna · Síndrome fémur-peroné-cúbito
itComplesso femore-fibula-ulnaComplesso FFU · Disostosi femore-fibula-ulna · Sindrome femore-fibula-ulna
nlFemur-fibula-ulna-complexDysostose van femur-fibula-ulna · FFU-complex · Femur-fibula-ulna-syndroom
ptComplexo fémur-fíbula-ulnaComplexo FFU · Disostose fémur-fíbula-ulna · Síndrome fémur-fíbula-ulna
plKompleks udowo-strzałkowo-łokciowyPFFD · Kompleks FFU · Zespół udowo - strzałkowo - łokciowy · Dyzostoza udowo - strzałkowo - łokciowa
csKomplex femur-fibula-ulnaFFU komplex · Dysostóza femur-fibula-ulna · Syndrom femur-fibula-ulna · Fokální femorální deficit
ukСтегново-гомілково-ліктьовий комплексДизостоз стегнової та малогомілкової кісток · Синдром стегнової-великогомілкової кістки · Комплекс FFU
zh股骨腓骨尺骨复合体股骨腓骨尺骨发育障碍
trFemur-fibula-ulna kompleksiPFFD · FFU kompleksi · Femur-fibula-ulna sendromu · Femur-fibula-ulna dizostoz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM228200Evalidated
ICD-10Q74.8NTBTattributedvalidated
ICD-11LD26.0NTBTindexvalidated
MONDO0009221Evalidated
MeSHC537918Evalidated
UMLSC1856790Evalidated
GARD2286Evalidated
MedDRA10068448Evalidated

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

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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
Point prevalence1-9 / 100 000—EuropeClass onlyValidated[EXPERT]
Prevalence at birth1-9 / 100 0001.5 / 100 000EuropeValue and classValidated[EXPERT]

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

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HPO phenotypes

14 annotations · validated 2024-10-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0040071Abnormal morphology of ulna
HP:0002823Abnormality of femur morphology
HP:0006501Aplasia/Hypoplasia of the radius
HP:0006101Finger syndactyly
HP:0003041Humeroradial synostosis
HP:0002983Micromelia
HP:0005792Short humerus
HP:0001171Split hand
Frequent (79-30%)
HP:0002991Abnormal fibula morphology
HP:0009811Abnormality of the elbow
HP:0009812Amelia involving the upper limbs
HP:0100560Upper limb asymmetry
Occasional (29-5%)
HP:0009828Peromelia
HP:0004322Short stature

Run the differential on the 8 obligate / very frequent terms

Annotation source: 8500790[PMID]

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Sources for this card