Review Question - QID 216388

A 7-year-old boy is evaluated by his pediatrician for a 6-month history of increasing right knee pain and difficulty walking. His parents say that he had mild pain after he tripped and fell during recess but that it has steadily been worsening over time. They brought him for evaluation when he woke up this morning crying and saying that he was not able to walk on his right leg. He has no significant past medical history and does not currently take any medications. His height is in the 75th percentile and his weight is in the 25th percentile for his age. His temperature is 98.6°F (37.0°C), blood pressure is 100/70 mmHg, pulse is 90/min, and respirations are 20/min. On physical exam, he has an antalgic gait with decreased stance time on the right leg. There is no tenderness to palpation or deformities in the right lower extremity, but there is limited passive internal rotation and abduction of the right hip. Which of the following would most likely be seen on radiography of this patient's right hip?