This is such a dumb argument anyways, can't believe you guys are going on and on. A QB can get injured inside or outside of the pocket. Obviously, the more hits you take, the more chances you have for injury. But, I would guess a hit while the QB is in the pocket is far more likely to cause injury because they- 1) May not see it coming, 2) are still trying to make pass before getting hit (Palmer for example), 3) greater chance of a fatass DL falling on your knee and tearing it to shreds. Outside of the pocket, QBs are more likely to see it coming and brace for impact.
In before Zito posts Gif of RG3 having Ngata spraining RG3s knee (which he missed 1 game) or Vick and ignoring guys that got injured in the pocket (Palmer, Marino, Montana, Young, Big Ben, etc)
But pocket QB's don't normally get hurt as often. And the primary reason for that is they have 350+ lb OL blocking for them, and there are a the rules changes pretty much prevent QB's from getting hit hard in the pocket. When you are out of the pocket, you are fair game. Yes you can be smart about it at times, but there is an enhanced risk for injury once you leave the pocket.