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Case 1: X-ray of the right hip on the day of injury
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During an assessment at a local emergency unit an x-ray of the right hip was requested and this was reported as normal (Figure 1).
Case 1: Computed tomography scan of the right hip 2 days post injury demonstrating a fracture of the anterior column and extension into the roof of the acetabulum
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Superiorly, it extended into the right iliac bone and inferiorly extended into the proximal right superior pubic ramus (Figure 2).
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Case 2: MRI scan of the right hip on the day of injury demonstrating a fracture of the anterior column
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This demonstrated a fracture of the anterior column of the right acetabulum (Figure 3) which was undisplaced with related bone marrow and soft tissue oedema.
Case 2: MRI scan of the right hip on the day of injury demonstrating fracture of the acetabular roof
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In addition, there was a linear fracture in the coronal plane extending through the acetabular roof (Figure 4) immediately posterior to the midline as well as through the junction of the middle and anterior third of the quadrilateral plate.
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Case 4: X-ray of the left hip one week after the injury
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An x-ray of the hip and pelvis were assessed as normal (Figure 5) and she was discharged with instructions to undergo MRI scanning if symptoms did not resolve rapidly.
Case 4: 3-D CT scan of the pelvis and left hip four weeks after injury (top arrow showing acetabular fracture, bottom arrow showing ischial ramus fracture and callus formation)
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