Silva's former Chute Box team mate Pele suffered the same thing
Snapped his shin due to a checked leg kick and had another fight after a year and a half. He was also no spring chicken. Of cource injuries differ from eachother but I'm confident about the most important thing: Silva making a full recovery so he won't have any problems with his leg for the rest of his life.
I definitely don't ever want to see him fight in MMA ever again, but a boxing match against RJJ may not be out of the question.