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Arthrogryposis-like signs in trisomy 18
Human Genetics
|January 1, 1981
Summary
This study describes two male infants with trisomy 18 and arthrogryposis multiplex congenita (AMC). While trisomy 18 anomalies can contribute to AMC, other factors are likely involved in these rare cases.
Area of Science:
- Medical Genetics
- Developmental Biology
- Neonatology
Background:
- Trisomy 18 (Edwards syndrome) is a genetic disorder associated with severe developmental abnormalities.
- Arthrogryposis multiplex congenita (AMC) is characterized by multiple joint contractures present at birth.
Observation:
- Two cases of newborn male infants presenting with both trisomy 18 and AMC are detailed.
- Infants exhibited typical trisomy 18 anomalies including polyhydramnios, reduced fetal movement, and skeletal muscle hypoplasia.
Findings:
- The observed anomalies in trisomy 18 can restrict joint movement, potentially leading to the development of AMC.
- The co-occurrence of AMC with trisomy 18 is rare, suggesting multifactorial etiology beyond chromosomal aberration.
Implications:
- Highlights the complex interplay of genetic and other factors in congenital conditions.
- Emphasizes the need for comprehensive evaluation in neonates with trisomy 18 and AMC.
- Contributes to understanding the pathogenesis of AMC in the context of chromosomal abnormalities.