We did not find a relationship of collagen alterations (COL1A1 rs1107946, COL1A1 rs2412298, COL2A1 rs121912891, and COL2A1 rs387106558) or coagulation alterations (CBS T833C rs115742905 and PT G20210A rs1799963) with LCPD. Here, COL1A1 is linked to Legg-Calve-Perthes disease.