Abstract
Background and Objectives: Diagnosis of developmental dysplasia of the hip (DDH) is important at birth. DDH occurs in 1-1.5 per 1000 live births and in girls is more commonly than boys. Early detection of DDH in newborns (up to 2 months) is known to be most successful for both treatment and prevention of complications of DDH. Clinical examination at birth is onset step in diagnosis of DDH. Because the obstetrics have earliest contact with newborns, therefore we decided to asses the role of clinical examination and risk factors in DDH.
Materials & methods: A retrospective analytic descriptive study done in Alzahra educational center in Tabriz. We studied 12494 records of live births between 2002-2004, and selected records which had at least one positive clinical finding for DDH. Data were gathered and analyzed using SPSS/11 soft word, by test.
Results: The prevalence of positive clinical finding for DDH in this study was 2.8 per 1000 live births. Limitation of abduction was the most common clinical finding (52.9% ). The rate of occurrence of DDH was 47% in the newborns with at least one abnormal clinical finding which confirmed by ultrasonography. There fore, prevalence of DDH was 1.36 per l000 live births. Often the newborns with DDH had at least one risk factor ( 70.6% ). Breech presentation and oligohydramnious were two most common factors associated with DDH. In addition there were Statistically significant different between risk foctors and DDH (p= 0.043).
Conclusions: According to this study, the highest suspicion of DDH is reserved for infants with positive clinical findings and with positive risk factors.