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PLoS One. 2013 Oct 24;8(10):e79427. doi: 10.1371/journal.pone.0079427. eCollection 2013.

Incidence and treatment of developmental hip dysplasia in Mongolia: a prospective cohort study.

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1
National Center for Maternal and Child Health, Ulaanbaatar, Mongolia.

Erratum in

  • PLoS One. 2014;9(1). doi:10.1371/annotation/3208b134-74de-4884-bd5a-0eb2e6c878ec.

Abstract

BACKGROUND:

In Mongolia, adequate early diagnosis and treatment of developmental hip dysplasia (DDH) have been unavailable and its incidence was unknown. We determined the incidence of ultrasonographic DDH in newborns and established adequate procedures for diagnosis and treatment of DDH at the largest maternity hospital in Ulaanbaatar, Mongolia.

METHODOLOGY/PRINCIPAL FINDINGS:

During one year (Sept 2010 - Aug 2011) we assessed the hips newborns using ultrasound and Graf's classification of DDH. 8,356 newborns were screened; median age at screening was 1 day. We identified 14,873 Type 1 (89.0%), 1715 Type 2a (10.3%), 36 Type 2c (0.2%), 70 Type D (0.4%), 14 Type 3 (0.08%), and 4 Type 4 hips (0.02%). Children with Type 1 hips (normal) were discharged. Children with Type 2a hips (physiologically immature) received follow-up ultrasounds at monthly intervals. Children with Type 2c to 4 (DDH; deformed or misaligned hip joint) hips were treated with a Tubingen hip flexion splint and also followed up. The hip abnormalities resolved to mature hips in all children who were followed up. There was no evidence for severe treatment related complications.

CONCLUSION/SIGNIFICANCE:

This study suggests that the incidence of DDH in Mongolian neonates is comparable to that in neonates in Europe. Early ultrasound-based assessment and splinting treatment of DDH led to mature hips in all children followed up. Procedures are feasible and will be continued.

PMID:
24205385
PMCID:
PMC3812003
DOI:
10.1371/journal.pone.0079427
[Indexed for MEDLINE]
Free PMC Article
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