The Importance of Ultrasonographic Examination in the Diagnosis of Developmental Hip Dysplasia : A Preliminary Study of 95 Newborns GEL

Objective: To evaluate the importance of ultrasonography in the diagnosis of developmental hip dysplasia. Material and Methods: Ultrasonographic examination of 190 hips of 95 newborns was conducted between October 2002 and March 2003. Clinical examination performed by an orthopaedic surgeon following the ultrasononographic examination, which was accomplished by a radiologist in a specially designed positioning apparatus. Results: There were 45 males, and 50 females in the series. Of the hips, 177 were classified as Graf Type1a and1b (93.2%), 10 (5.3%) Graf Type 2a, 2 (1%) Graf Type 2c and 1 (0.5%) Graf Type 3a. Alpha values of right and left hips in Graf Type Ia and Type Ib hips were significantly higher than the values in Graf Type 2a (p=0.0001), but with respect to beta values, there was no significant difference. Number of hips in Graf Type 2c and Graf Type 3a were not significant to be compared. There was a significant correlation between the clinical and ultrasonographic findings in each hip type (p=0.0001). Conclusion: Newborns should be routinely examined ultrasonographically for developmental dysplasia of the hip. However, when the social and economical conditions of our Country are taken into consideration, at least the newborns belonging to high-risk groups should be examined ultrasonographically.

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