Radiographic features of pelvis and hip joint development of English Bulldogs

Objectives: To evaluate distinctive features of pelvis and hip joint development of English Bulldogs throughout the first year of life.Methods: The pelves of 20 English Bulldogs were radiographed at three different ages (5.2° of external rotation), with retroversion of the acetabulum confirmed by the presence of the crossover sign. An external rotation of the hemipelvis on its long axis >5° was likely associated with a moderate to severely altered hip joint conformation.Clinical Significance: Abnormal hip conformation was common in this series of English Bulldogs. Torsional deformity of the pelves with acetabular retroversion was a common and distinctive feature, which has not yet been thoroughly studied in dogs. These findings need further evaluation in English Bulldogs as well as in other breeds