They do seem loosely related in the fact that coming back from an injury does require some specialized training and sometimes a modified technique. If someone is not aware of the potential for disaster, then that person has no business on a motorcycle of any kind, especially a dirt bike. If somebody should happen to read a story about a broken femur or a blown knee, and gets scared of dirt bikes then that person shouldn't be riding dirt bikes in the first place. Now, if that person reads a story of a serious knee surgery and chooses to protect his/her knees with braces instead of pads, then that is a good thing.
I really need to schedule an appointment with the quack to bug him for a brace script.