UTR
Just to give you some moral support, I suffered from polio in the 1950's and as a result have no calf muscle on my left leg. My degree of mobility sounds similar to yours and I also walk with a limp which becomes more pronounced after long walks.
I was apprehensive about my first CAA Class 1 medical (over 30 years ago) but the doctor reckoned that I should'nt have a problem with assymetric flight and passed me. In all the medicals I have had since, it has'nt even been commented on!
I have had a long career with a major national airline and still have a current class 1 medical. I also know of two or three colleagues who do'nt have 100% mobility through illness or accident but are still flying.
As FD and BM say, I do'nt think you should have a problem with most employers.
Anyway good luck and keep us posted as to your progress