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Results 1 - 2 of 2 for Familial avascular necrosis of the femoral head
  1. COL2A1 gene 
    ... adulthood. Both conditions can occur in the same family. Like Legg-Calvé-Perthes disease, avascular necrosis of the femoral head causes the upper ends of the thigh bones ( ...
    https://medlineplus.gov/genetics/gene/col2a1 - Genetics
  2. Legg-Calvé-Perthes disease 
    ... at onset-dependent presentations of premature hip osteoarthritis, avascular necrosis of the femoral head, or Legg-Calve-Perthes disease in a single family, consequent upon a p.Gly1170Ser mutation of COL2A1. ...
    https://medlineplus.gov/.../condition/legg-calve-perthes-disease - Genetics