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Pediatric Rounds Review Questions
Knee Pain in a 12-Year-Old Girl

Answer 1

  1. Frog-leg lateral pelvic view. The primary modality to confirm the diagnosis of SCFE is plain radiography. AP and frog-leg lateral pelvic views are examined to identify the displacement of the femoral neck on the proximal femoral epiphysis. The physis should be carefully examined for possible widening without the posterior displacement indicative of SCFE. Even if the patient presented with unilateral complaints, both hips should be included in the radiographs to rule out bilateral involvement with the asymptomatic side acting as a “silent” slip. Klein’s line should drawn along the superior border of the femoral neck and should bisect the femoral epiphysis. Failure to intersect the epiphysis confirms the diagnosis of SCFE.

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