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Review
. 2020 Sep;63(9):103990.
doi: 10.1016/j.ejmg.2020.103990. Epub 2020 Jun 12.

Genetics of developmental dysplasia of the hip

Stefan Harsanyi  1 , Radoslav Zamborsky  2 , Milan Kokavec  3 , Lubos Danisovic  4
Affiliations
Review

Genetics of developmental dysplasia of the hip

Stefan Harsanyi et al. Eur J Med Genet. 2020 Sep.

Abstract

In the last decade, the advances in the molecular analyses and sequencing techniques allowed researchers to study developmental dysplasia of the hip (DDH) more thoroughly. Certain chromosomes, genes, loci and polymorphisms are being associated with variable severity of this disorder. The wide range of signs and symptoms is dependent either on isolated or systemic manifestation. Phenotypes of isolated cases range from only a mild ligamental laxity, through subluxation, to a complete dislocation of the femoral head. Systemic manifestation is connected to various forms of skeletal dysplasia and other malformations characterized by significant genetic aberrations. To reveal the background of DDH heredity, multiple studies focused on large sample sizes with an emphasis on the correlation between genotype, phenotype and continuous clinical examination. Etiological risk factors that have been observed and documented in patients include genetic, environmental, and mechanical factors, which significantly contribute to the familial or nonfamilial occurrence and phenotypic variability of this disorder. Still, the multifactorial etiology and pathogenesis of DDH are not yet sufficiently clarified, explained, or understood. Formation of connective tissue, osteogenesis, chondrogenesis, and all other affected pathways and variations in the function of their individual elements contribute to the creation of the pathology in a developing human body. This review article presents an up-to-date list of known DDH associated genes, their products, and functional characteristics.

Keywords: Associated genes; DDH; Developmental dysplasia of the hip; Genetic predisposition; Heredity.

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