Well I just returned from the surgeon's office and they were absolutely great. Covered my questions pretty easily and were in line with accepted anesthesia methods as discussed here, so no ketamine. Small dose of injectable to slightly sedate him and then gas to keep him under.
The bigger issue is going to be deciding the appropriate course for the surgery. There are two options, the first option is using pins to help the two sections with pins. Not the easiest surgery, there could be some issues with healing properly and a worst case scenario is a second surgery could be necessary. There are also a great deal of likelihood of arthritis in his later years. The other option is Femoral Osteotomy. This is basically creating a false joint by shaving down the bone and scar tissue develops and the muscles holds things together. Sorry for the lack of specifics and I do have it in my head it's just hard to explain all the information we were loaded with.
Anyway, at this point we will have one more conversation this evening and then render a final decision in the morning. Most importantly we want to do the right thing for Chongo. I'm sure when it's all over with he will be the happy and lovable kitten he has always been. He wasn't purchased for any type of vanity reasons, we just wanted a fun loving and active cat. I don't see that changing along the way, just want to make sure we make the decision that gives him the most quality of life.
Thanks again for the thoughts and prayers, they are well received and greatly appreciated.