ISSN: 2149-2247 | E-ISSN: 2149-2549
Erciyes Medical Journal Analysis of Risk Factors for Ultrasonographic Graf Type IIa (−) Hips in Developmental Dysplasia: A Hospital-Based Case-Control Study with Follow-Up Outcomes [Erciyes Med J]
Erciyes Med J. 2021; 43(2): 175-179 | DOI: 10.14744/etd.2020.90232

Analysis of Risk Factors for Ultrasonographic Graf Type IIa (−) Hips in Developmental Dysplasia: A Hospital-Based Case-Control Study with Follow-Up Outcomes

Bahtiyar Haberal, Orçun Şahin, Ismail Cengiz Tuncay
Department of Orthopaedics and Traumatology, Başkent University Faculty of Medicine, Ankara, Turkey

Objective: To examine the association of Graf type IIa(-) hips with maternal and infant risk factors in newborns and to evaluate the follow-up outcomes.
Materials and Methods: Two different risk analyses were performed. In the first analysis, Graf type I hips were grouped as “controls,” and Graf type II were grouped as “cases.” In the second analysis, all the Graf type I and Type IIa(+) hips were grouped as “controls,” and all Graf type IIa (-) hips were considered as “cases.” Maternal age, presence of consanguinity, pregnancy, and smoking were considered as maternal risk factors. Sex, birth weight, gestational age, associated congenital anomalies, and family history were considered as infant risk factors. Further, we determined the risk factors for Graf type IIa and type IIa (-) hips.
Results: The study population included 73 cases (11.4%) and 569 controls (88.6%), including 322 (50.2%) male and 320 (49.8%) female infants. Graf type IIa hips revealed significant differences for gestational age (>42 wk), birthweight (>3500 g), and maternal age (≤20 y). At follow-up, all Graf type IIa(+) hips became Graf type I mature hips. In contrast, three Graf type IIa(−) hips (3/12, 25%) required additional treatment.
Conclusion: Significant risk factors for Graf type IIa(-) hips were female sex, gestational age of >42 wk, and birthweight of >3500 g. Almost one-quarter of Graf type IIa (-) hips may require additional treatment. Thus, significant risk factors for Graf type IIa(-)should be remembered in clinical practice.

Keywords: Hip dysplasia, screening, ultrasonography, graf type II, risk factors

Bahtiyar Haberal, Orçun Şahin, Ismail Cengiz Tuncay. Analysis of Risk Factors for Ultrasonographic Graf Type IIa (−) Hips in Developmental Dysplasia: A Hospital-Based Case-Control Study with Follow-Up Outcomes. Erciyes Med J. 2021; 43(2): 175-179

Corresponding Author: Bahtiyar Haberal, Türkiye
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