I'm sure it can be done on other places in your body as long as they are joints. The condition in my shoulders can happen in different joints on your body, so I don't see why the surgery couldn't be done in different places. :P Anyway, sorry it took so long to get the post up, but it's up now. It's not necessarily good, but I couldn't think of anything to do that would qualify as fair that Aruna wouldn't catch him immediately, then I remembered that you said the teleportation would just be speed. xD Also the name thing I thought seemed in his character to do to people to freak them out.