Ortho Hors D'oeuvres (Prompt):

Patient is a 10 year-old boy brought into the emergency department for evaluation of one day of left hip pain. The boy is unable to bear weight. He denies any trauma. On physical examination, passive flexion of the knee to 90 degrees provokes external hip rotation, as below:

X-rays show:

Questions:

1) What is the key finding on x-ray?

2) What are the common risk factors and exam findings?

3) What is the management?

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