Blount's disease: a lesser known cause of bowlegs mandating early differentiation from physiological bowing.

We present a 16-month-old child, with progressively increasing bowing of legs, having a normal serum calcium, phosphorus and alkaline phosphatase level; lower limb radiographs revealed bilateral medial tibial metaphyseal beaking. Based on these findings, a diagnosis of Blount's disease (infantile tibia vara) was made and an orthotic management program was instituted for the child.