I have painful swelling in both calfs and behind both knees, doctors are puzzled, need second opinion?

Good day i am a 27 yr old male with painful swelling in both calfs and behind both knee. I have had a bi lateral anterior faciotomy and ankle spurs removed from both legs but approximately 18 months post op the pain is getting worse and i have very limited mobility in my ankles. I have spent 7 years in the Canadian armed forces which required alot of running and ruck marches prior to the start of this pain 2 -3 years ago. I have been to see physio, osteopathists, surgions, reumotologists and the pain clinic. All doctors i have seen say there is a large amount of swelling in my calfs but have all been puzzled as to why. Thank you for your time.