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Diff Dx in MED

  • - Legg-Calve'-Perthes disease;
  • Findings in M.E.D. not seen in Perthes:
  • short, stunted metacarpals/metatarsals;
  • irregular femoral heads which is bilateral & symmetric, is not assoc w/ metaphyseal cysts, & commonly has early acetabular changes;
    • early hip arthritis is common;
    • bilateral Legg-Calve'-Perthes disease is uncommon;
  • abnormal normal ossification (tibial "slant sign"
  • flattened femoral condyles;
  • T12/L1 notching and deformed ring apophysis;
  • valgus knees;
  • waddling gait