Nine patients with bilateral femoral hypoplasia have been investigated in an attempt to elucidate the syndromic identity and pathogenesis of the femoral hypoplasia‐unusual facies syndrome (FH‐UFS). We believe that the FH‐UFS represents the end of the spectrum of a malformation complex and that it does not exist as a specific syndromic entity. Available evidence indicates that the pathogenesis is multifactorial rather than the result of any simple genetic mechanism.

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