Radiograph insufficiency fracture of the sacrum

The plain radiograph of the pelvis is from a 95-year-old male who sustained minimal trauma and complained of left groin pain. A fracture of the sacrum is not clearly visible on the first image (A) and perhaps a little more prominent on the magnified view (B) and best seen when highlighted and magnified on image C (arrow). Fractures of the left sided superior and inferior pubic rami are also present (double arrow). These findings are consistent with insufficiency fractures of the left sacral ala and pubic ramus.