Reference values and variation of acetabular angles measured by computed tomography in 170 asymptomatic hips

BackgroundWe have little knowledge of reference values for acetabular angles.PurposeThe purpose of this study was to report values and variation for the center-edge (CE), the acetabular-index (AI), the anterior-sector (AASA), the posterior-sector (PASA), and the acetabular-anteversion angle (AcAV) and to investigate gender differences.Material and MethodsRetrospectively, we recruited 96 individuals, 52 women (mean age = 63 ± 12 years) who had undergone computed tomography (CT) as part of examination for lymphomas in 2013 at Aarhus University Hospital. After CT, the participants completed the Oxford Hip Score. Eight individuals indicated hip problems and three had missing data; those 11 were excluded from the material. The acetabular angles for both hips were measured on CT images by an experienced radiologist. The acetabular angles are reported for right and left hip as mean ± SD degrees and compared women and men with a two-sample t-test.ResultsThe CE angle [right;left] averaged [34±6;35±5]. The AI angle...