Pain from an arthritic hip (osteo) becomes insupportable and destroys your life. A replacement op. is a simple job for surgeons these days (my 1st was in 2004). I tried everything else - sucking a cube of jelly every day etc., etc.. They didn't work.
Honestly, it is not a huge op. these days. My OH had heart problems (biggish, needing a triple bypass in 2000) and then had a hip replacement with an epidural in 2005. They even offered him a video link so he could see what they were doing.
Obviously, I'm not a medic and you do far better to listen to sqad. It seems odd that you are not a candidate for an epidural, however.