During a 15-year NFL career that sent him pinballing over the middle of the field too many times to count, absorbing hits as wicked as they come, former Denver Broncos receiver Brandon Stokley endured injuries that literally ran from head to toe.And while, by his own estimate, that included at least a dozen concussions, the only health issue that made him seriously contemplate quitting the game was a problem with a small bone in the middle of his foot in his fourth season.“I told my wife, ‘This is it. I’m …