There was a post intitled, "difference between vicodin and tramadol" It was started Feb of 08. Has about 4 responses, and you might want to have a look at it.
I have never taken tramadol, but many have that come here. Some like it and others don't.
My feeling is, it's at least better than advil or alleve, so I would certainly give it a try. Did you call the hospital and inquire if you had left your prescription there?
Good luck and I hope you get some relief. Also, there are some folks that are of the opinion that you never report a lost or stolen prescription. If this is rare for you to use controlled meds, a phone call probably won't hurt especially if you DON'T ask for a replacment script.