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Slipped capital femoral epiphysis — RCPSC EM MCQ

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HardMusculoskeletalSlipped capital femoral epiphysisRCPSC EM

A 13-year-old boy with obesity has 3 weeks of atraumatic knee pain and a limp. Hip internal rotation is limited and painful while the knee examination is normal. He is afebrile and inflammatory markers are normal. What is the most appropriate investigation?

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Correct answer: C — AP pelvis and lateral hip radiographs

AP pelvis and lateral hip radiographs is correct: the clues indicate Slipped capital femoral epiphysis and this option addresses the immediate ED priority. The distractors delay care, target a less likely problem, or are unsafe in this physiology.

Reference: Canadian paediatric orthopaedic emergency practice