Clin Exp Pediatr.
2022 May;65(5):262-268. 10.3345/cep.2021.01074.
Risk factors and screening timing for developmental dysplasia of the hip in preterm infants
- Affiliations
-
- 1Department of Pediatrics, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
- 2Department of Radiology, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
- 3Department of Orthopaedic Surgery, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
- KMID: 2529558
- DOI: http://doi.org/10.3345/cep.2021.01074
Abstract
- Background
The delayed diagnosis of developmental dysplasia of the hip (DDH) requires complex treatment and sometimes progresses to hip osteoarthritis. Purpose: This study aimed to evaluate the risk factors and screening time for DDH in preterm infants.
Methods
A total of 155 preterm infants with a gestational age <32 weeks screened for DDH with ultrasonography were enrolled in this retrospective chart review.
Results
The incidence of DDH was 6.45% (10 of 155). Gestational age, birth weight, sex ratio, and breech presentation did not differ significantly between infants treated for DDH (n=10) and nontreated infants (n=145) (gestational age, 29.2±1.4 weeks vs. 29.6±2.0 weeks, P=0.583; birth weight, 1,240±237 g vs. 1,295±335 g, P=0.607; female sex, 7 of 10 (70.0%) vs. 77 of 145 (53.1%), P=0.346; and breech presentation, 5 of 10 (50.0%) vs. 43 of 145 (29.7%), P=0.286, respectively). Performing the first ultrasonography earlier than 38 weeks of postmenstrual age (PMA) increased the risk of an abnormal finding by 3.76 times compared to performing it at ≥38 weeks of PMA. These abnormal findings on ultrasonography resolved spontaneously. Breech presentation increased the risk of minor abnormal findings on the first ultrasonography by 3.11 times versus nonbreech presentation and resolved spontaneously. DDH in preterm infants did not occur predominantly on the left side or in infants born with breech presentation.
Conclusion
Performing ultrasonography screening earlier than 38 weeks of PMA caused unnecessary subsequent ultrasonography and overtreatment. Breech presentation was not a risk factor for DDH in preterm infants. However, breech presentation could increase the risk of minor abnormal findings at the 1st ultrasonography compared to nonbreech presentation, which resolved spontaneously. The etiology and risk factors for DDH in preterm infants are somewhat different from those for DDH in term infants.
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- Ideal timing for aggressive screening to detect developmental dysplasia of the hip in term and preterm infants
- Pediatric Hip Disease (I): Diagnosis and Treatment of Developmental Dysplasia of the Hip
- Neurodevelopmental Outcomes of Moderate-to-Late Preterm Infants
- Hip Screening in Infants Presenting with Asymmetricity of Lower Extremity
- Analysis of Risk Factors for Developmental Delay in Preterm Infants Using Screening Test
