Presentation
Trauma.
Patient Data
Age: 45 years
Gender: Male
From the case:
Bilateral accessory superior acetabular notches
Frontal

Small lucencies in the roof of the acetabulums bilaterally represent accessory superior acetabular notches (anatomical variant). No fracture or malalignment is identified.
From the case:
Bilateral accessory superior acetabular notches
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Axial bone window

CT confirms the presence of bilateral accessory superior acetabular notches.
Case Discussion
Accessory superior acetabular notches are an anatomical variant, which should not be confused for a traumatic injury.