I hate surgery. I've had so much over the years I've forgotten around half of them (probably from all the anesthesia) . It looks like you may get the thumb movement back, great news.
I'm putting off my right wrist surgery, bone on bone, only about 45 degrees of movement, but Hell I can still move it. If I get surgery for it I come out of the hospital with a brass plate in the wrist so it no longer moves. It's gonna take a lot of wrist pain to get me to submit to more surgery that just limits my movement.