Review Question - QID 219128

A 19-year-old male presents to the emergency room after a motor vehicle accident that occurred when driving home from a late-night party. In the hospital gurney his left leg is in a neutral but foreshortened position. Imaging demonstrates a hip dislocation. Multiple failed attempts are made at reducing the hip under adequate sedation, but he is ultimately brought to the operating room for closed versus possible open reduction under general anesthesia. Which radiographic features seen on the patient's initial presenting films should caution the provider that the patient may have an irreducible variant hip dislocation?