Legg-Calve-Perthes disease (LCPD) is a type of avascular necrosis of the femoral head occurring mainly in male children and causing early osteoarthritis. We report 2 generations of 4 male family members with LCPD-like features and mutation of the COL2A1 gene of the 12q13 chromosome. If LCPD occurs in any family member, we recommend genetic analysis and counselling as well as early radiological screening of related children.
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