In reply to Babika:
Sorry, my post was overly scary. The bunion on the one foot was quite advanced and I'd functioned fine with it for several years until it became limiting. It was well worth having the treatment in my case and I'm very happy with the result.
I was able to walk after the op with a special sandal on one foot, avoiding complete weight bearing on the one foot at first, but had to be careful with the metal pin protruding from my second toe (this procedure is not part of treating the bunion itself and I imagine is often not necessary). Without the pin I'd have been back to normal quicker. In fact I was back to normal very quickly once the pin was removed.
It was the NHS. The surgeon was very sympathetic when I explained that I enjoyed walking and climbing etc but this was becoming affected by the condition. He had to get me to do a questionnaire so he could justify the op and my answers were "yes" to the majority of questions.