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(A) Axial computed tomography (CT) image displaying a vertical fracture through the foramen. (B) Axial CT image of the same fracture at the cephalad aspect of the sacrum, demonstrating that the fracture exits medial to the L5–S1 facet. (C) Axial CT image of the sacrum demonstrating a vertical fracture through the sacral foramen. (D) Fracture exiting the sacrum into the sacroiliac joint. (E) Intact L5–S1 facet that is in continuity with the sacrum.
