There is no way to change the knee appearance at his age. This may not even be an issue at the NDA, you may be worrying without any reason. They will look at what issues this appearance of the knee is causing and then decide. The flat foot, if it definitely that may Cause a problem. Some flat feet will be treated with simple inserts into the shoe whereas some may need surgery. To kNow which is which, he will need to be examined and investigations done.
Hope this is helpful. Good luck with the NDA exams, our country needs people like your son. Proud that he has chosen this to serve our country.
Dr Vinu Raj
MBBS MRCS FRCS (Trauma&Orthopaedics)
Consultant Orthopaedic Surgeon
Answered2017-04-28 05:16:51
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