Hi Gary,
I merged this question with your previous topic, I hope that's OK with you. To answer your question, at least from this community's perspective, some people decide to heal slowly; carefully, while making a change in their lifestyle.
Others go nuts and do whatever they want, and some pay the consequences. If your question is about durability, the devices are pretty tough assuming that YOUR vertebral bones have good health -- meaning density. And this is another area of confusion: localized osteoporosis!
That said, if you are perfectly qualified, and have good bones, a good surgeon, a good device......you'll be in the best shape to have a good recovery.
You may have seen this topic already, if not, please do:
ADR Risks, Complications, Disqualifications