Wishto-
Know what you are going thru. I am waiting in the Flight Screening Pool at moment ie waiting for 2 wk course at Tamworth.
I had a knee arthroscopy done last year and this raised some eyebrows. Dr at recruiting medical said it was all good but AVMED would get final say. About 6wks later AVMED !!!! canned me and said I was too much off a risk of not being able to carry out all strenuous activities associated with being in armed services. (Despite the fact that I would probably be fitter than 95% of them)
Anyway to cut along story short, I appealed the decision, got two knee specialist reports, a letter from my 'boot camp' instructor from Fitness First, another letter from my squash partner together with my covering letter.....and wow had a win and my application was under consideration again.
So if you really want in, keep fighting them all the way.
Cheers and good luck with it!!