It was an injection of stem cells directly on the nerve. They found an appropriate surgical method to put them into the right place. The author of this study co

It was an injection of stem cells directly on the nerve. They found an appropriate surgical method to put them into the right place. The author of this study contacted me about it shortly after but I can't share the case study yet. There is a group working on it, likely many things it might not pan out and one surgery is not enough to get it approved but its certainly a start. There may be other cheaper ways too with general drugs that are cheaper if they can promote the recreation of the nerves.