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01.12.2017 | Research article | Ausgabe 1/2017 Open Access

Population-based study of the incidence of congenital hip dysplasia in preterm infants from the Survey of Neonates in Pomerania (SNiP)

Zeitschrift:: BMC Pediatrics > Ausgabe 1/2017

Autoren:: A. E. Lange, J. Lange, Till Ittermann, M. Napp, Paul-Christian Krueger, H. Bahlmann, R. Kasch, M. Heckmann

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Abstract

Background

Some etiological factors involved in developmental dysplasia of the hip (DDH) occur in the last trimester of pregnancy, which could result in a decreased incidence of DDH in preterm infants. The aim of this study was to compare the incidence of DDH between preterm and term infants.

Methods

Ultrasound of the hip joint was performed in 2,534 term infants and 376 preterm infants within the population-based Survey of Neonates in Pomerania (SNiP) study.

Results

A total of 42 (1.66%) term infants had DDH (Graf type II c, 0.8%; type D, 0.3% left and 0.4% right; type III a, 0.2% left). Eighteen infants had bilateral findings. Hip dysplasia occurred more frequently in female neonates (32/1,182 vs. 10/1,302, p < 0.023; 95% CI 0.012–0.022, χ ² test). A familial disposition for DDH was found in 169 (6.7%) term infants and 181 (7.1%) infants in the overall population. In preterm infants, dysplasia of the hip was found in only three late preterm infants with gestational age between 36 and 37 weeks (n = 97) and not in preterm infants <36 weeks gestational age (n = 279). Regression analysis revealed a narrowly significant association between gestational week of birth and DDH (relative risk = 1.17; 95% confidence interval 0.99–1.37; p = 0.065).

Conclusion

Our study suggests that preterm infants <36 weeks gestational age have a decreased risk of DDH.

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Titel: Population-based study of the incidence of congenital hip dysplasia in preterm infants from the Survey of Neonates in Pomerania (SNiP)
Autoren:: A. E. Lange
J. Lange
Till Ittermann
M. Napp
Paul-Christian Krueger
H. Bahlmann
R. Kasch
M. Heckmann
Publikationsdatum: 01.12.2017
DOI: https://doi.org/10.1186/s12887-017-0829-5
Verlag: BioMed Central
Zeitschrift: BMC Pediatrics BMC series – open, inclusive and trusted
Ausgabe 1/2017
Elektronische ISSN: 1471-2431

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Population-based study of the incidence of congenital hip dysplasia in preterm infants from the Survey of Neonates in Pomerania (SNiP)

Abstract

Background

Methods

Results

Conclusion

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Abstract

Background

Methods

Results

Conclusion

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