Figure 1.
Imaging of the pelvis. (a) Radiograph of the anteroposterior pelvis demonstrates the presence of bilateral triangular osseous excrescences from the posterior aspect of the ilia, known as iliac horns (arrows). (b) CT of the pelvis shows the bilateral iliac osseous excrescences (arrows) to emanate from the posterior body of the ilia at the origin of the gluteus medius muscles.