What causes genu valgum?

Multiple etiologies. Etiologies: bilateral genu valgum physiologic renal osteodystrophy (renal rickets) skeletal dysplasia Morquio syndrome spondyloepiphyseal dysplasia chondroctodermal dysplasia unilateral genu valgum physeal injury from trauma, infection, or vascular insult proximal metaphyseal tibia fracture benign tumors fibrous dysplasia osteochondromas Ollier's disease.