显示当前的不同URL的内容

So we have this old highly cumbersome legacy bloated broken custom framework that we are supporting...it has a mish-mash of controllers and templates and what-nots that in the end renders an human friendly URL based page.

So I have something like http://mysite/some-category/this-page which renders me a page.

How I can achieve that if I type http://mysite/other-category/that-page it renders me the same page as above?

I know that many frameworks have internal routing capabilities for such things, but this one really does not. I think may be Apaches URL Rewrite can be used for it, but I am not sure how to do it....

Any pointers are greatly appreciated!