18 months old does not walk

[Guest guest]

My son had his feet corrected with Ponzeti method within first three months

of his life. We are using nighttime shoes and visit the doctor once in 6

months for a checkup. The only our concern - Sam is not walking by himself.

, chair, hands - he always needs some support to walk.

Did anyone have problem to get the child to walk independently?

Any advice is greatly appreciated.

Mike.