I had one in Dec 2008 and it was the best thing I could have done. The first few months is no picnic; and it is very important to do your therapy. The end result for me is fantastic!!! Hope you have the same success I did. I can honestly say I am now pain-free there. People tell you that you cannot kneel afterwards...that is not true, it just feels different and something you have to adjust to if there are any situations where you wish to kneel. I have to when making my camper bed because the backside of it is against the wall.
My recumbent bike was a great asset in my recovery also.