A 3 yr old Obese patient with Blount (Idiopathic Tibia Vara)

I was in the children's outpatient clinic when a slim man walked up with his son at my table. I couldn't help but notice how big the boy was. On further scrutiny, I noticed that he walked with a limp and had bow legs but with the left more affected. Suspecting Blount disease, the father gave me an xray having come for a follow up

x ray
 
Now convinced that he had blount