Hi thanks for your query and welcome to lybrate. I am Dr. Akshay from fortis hospital, new delhi.
There are many causes of flatfoot, so it can be idiopathic or it can be secondary to an underlying issue like bony coalition etc.
First step is to get x rays done and rule out an underlying bony issue.
If it is not then we need footwear modification, intensive physical therapy and monitoring on whether there is any issue or not. Do not hesitate to contact me if you need any further assistance.
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