I was under the impression that they could put a nylon or ? Disc in between the bones. I’m sure you’ve done research on it. Hope things turn out well you. -12 C here 6” snow on ground more coming into next week. Heating shop full time now. Got my heated snowmobile suit ready for my 200’ walk to my toy box ( :poke: Fred). Remember guy’s it’s winter driving keep the greasy side down