Blount's Disease

• tibia vara - causes bow leg deformity
• dysplasia of the medial aspect of the proximal tibial epiphyses, causes the lower leg to point inward (wider space at knees, narrower at ankles)
• This condition is more common among African-American children. It is also associated with obesity and early walking. There does not appear to be an obvious genetic factor.
• Early x-ray changes show an increase in the epiphyseal metaphyseal angle and beaking of the proximal medial metaphysis.
• Unlike physiologic bowleg, which tend to straighten as the child develops, Blount's disease is progressive and the condition worsens. It can cause severe bowing of the legs and can affect one or both legs.
• Treatment includes bracing and possibly surgery.

CHLA Board Review 2005