Fig. 4.

Anatomical angles identified through CT reformats in the (top left) coronal, (top right) sagittal, (bottom left) transverse, and (bottom right) X-ray images. In the simulated X-ray image (bottom right), the acetabular rim is shown by the blue line; the cyan “plus” marks represent the locations defining the following points used in making measurements: from left-to-right, the most lateral aspect of the acetabular rim, the center of the femoral head, and the most medial aspect of the sourcil