Reliability of a New Radiographic Classification for Developmental Dysplasia of the Hip

Autor: Narayanan, Unni, Mulpuri, Kishore, Sankar, Wudbhav N., Clarke, Nicholas M.P., Hosalkar, Harish, Price, Charles T.
Zdroj: Journal of Pediatric Orthopaedics; July-August 2015, Vol. 35 Issue: 5 p478-484, 7p
Abstrakt: Existing radiographic classification schemes (eg, Tönnis criteria) for DDH quantify the severity of disease based on the position of the ossific nucleus relative to Hilgenreiner’s and Perkin’s lines. By definition, this method requires the presence of an ossification centre, which can be delayed in appearance and eccentric in location within the femoral head. A new radiographic classification system has been developed by the International Hip Dysplasia Institute (IHDI), which uses the mid-point of the proximal femoral metaphysis as a reference landmark, and can therefore be applied to children of all ages. The purpose of this study was to compare the reliability of this new method with that of Tönnis, as the first step in establishing its validity and clinical utility.
Databáze: Supplemental Index