I'd recommend watching the documentary that's been on recently about Alex Smith's fight back from his gruesome leg fracture back in 2018
I didn't realize how serious the situation became in the weeks that followed the injury but I also assumed that it would be a career-ender given his age and the fact that, financially, he's set for life. Would be amazing if he played again
The documentary is part of the E60 series and is called Project 11. If you have BT it's re-run a couple of times in the coming week