You are having flat foot
and swellings near by knee joints..right?
The swellings may be some tumor
or rheumatoid nodules
Diagnosis is neccessary for the treatment.
You just consult dermatologist
or surgeon .
Clinical examination and radiology would be helpful for diagnosis.
If needed biopsy
may be done for firm diagnosis .
And then , you the exact treatment you may be given.
Surgery may be needed.
You do not worry, Just do as I said.
Dr. Ilyas Patel MD