Anyone who had polio?

Are there any people among you who had polio many years ago? I had polio nearly 60 years ago and recovered fairly well, but since I had breast cancer two and half years ago and stopped taking HRT, I feel I have deteriorated and now find it difficult to walk. I was taking Tamoxifen for two years, which has side effects of weakness, tiredness and joint pain, I have been transferred to Aromasin six months ago, but this drug also has the same side effects. I have been to see a neurologist who has done lots of tests which show nothing else except that I had polio, now he wants to do a lumbar puncture which I am not willing to undergo. He wants to exclude all possible diseases before he will diagnose Post Polio Syndrome, for which there is no test (and no cure eiher!)