Pelvis & HipDiscrepancy between ultrasonographic and radiographic findings in patients treated for developmental dysplasia of the hip; hip maturation on ultrasonography may not be consistent with radiographic hip maturationAtalar, Hakana; Gunay, Cuneydc; Turanli, Sacita; Koktener, AslibAuthor Information aDepartment of Orthopaedics and Traumatology, Gazi University Faculty of Medicine bDepartment of Radiology, Umut Hospital, Ankara cDepartment of Orthopaedics and Traumatology, Osmangazi University Faculty of Medicine, Eskisehir, Turkey Correspondence to Cuneyd Gunay, MD, Department of Orthopaedics and Traumatology, Osmangazi University Faculty of Medicine, Buyukdere mah., Meselik Kampusu, Eskisehir 26480, Turkey, Tel: +90 222 239 29 79/2509; fax: +90 222 229 14 16; e-mail: [email protected] Journal of Pediatric Orthopaedics B: May 2020 - Volume 29 - Issue 3 - p 228-234 doi: 10.1097/BPB.0000000000000654 Buy Metrics Abstract Currently, hip sonography is used for early diagnosis and for monitoring developmental dysplasia of the hip (DDH) treatment in many countries. An early pioneer of ultrasonography for early diagnosis of DDH was Graf. Based on the Graf approach, hip ultrasonography is more sensitive and specific than radiography for the diagnosis of DDH, because of its capability to show cartilaginous structures of the hip joint. The aim of this study was to compare radiographic and ultrasonographic findings in patients treated for DDH. This study included 88 infants (98hips) treated for DDH. Radiography was simultaneously used for treatment and follow-up evaluation in addition to ultrasonography after six months of age. A retrospective evaluation was made of the ultrasonographs and radiographs of these infants. Of the total 98 hips, 28 were normal both ultrasonographically and radiographically, and a pathologic hip was demonstrated in 32 hips both sonographically and radiographically. Hip ultrasonography showed abnormal development in 32 hips, while radiography showed abnormal development in 70 hips. In 38 hips, the findings were normal according to ultrasonography but pathological according to radiography. There were no hips that were normal radiographically but pathological sonographically. When radiography is accepted as the standard imaging method in our study patients, the sensitivity and specificity of hip ultrasonography were determined as 45.7% [95% confidence interval (CI): 41.5–45.7] and 100% (95% CI: 89.4–100), respectively. These findings suggest that hip maturation apparent on ultrasonography may not be consistent with radiographic hip development in infants treated for DDH. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.