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Recently, the authors of two prospective multicenter observational studies recommended surgery to improve head sphericity in older children, whereas large retrospective observational studies suggest that surgery does not improve head sphericity in older children. Thus, the treatment for Legg-Calvé-Perthes disease (LCPD) remains controversial.

Do Femoral or Salter Innominate Osteotomies Improve Femoral Head Sphericity in Legg-Calvé-Perthes Disease? A Meta-analysis