Iliac Oblique View of the Acetabulum.

(A)This view is taken by rotating the patient into 45 degrees of external rotation by elevating the uninjured side on a wedge.(B)Anatomic landmarks of the left hemipelvis. The iliac oblique view best demonstrates the posterior column, outlined by the ilioischial line, the iliac crest, and the anterior lip.

(From MoedBR, BoudreauJA. Acetabulum fractures. In: TornettaP III, RicciWM, OstrumRF, et al., eds. Rockwood and Green’s Fractures in Adults. Vol 2. 9th ed. Philadelphia: Wolters Kluwer; 2020:2081–2180.)