RazrSkuter - Personal insults aside, as they lend nothing to the discussion at hand, You are correct, you did specify the article dicussion as limited to concussive injury. I stand corrected. And for the record, I am in agreement that bicycle helmets are way overrated, in my opinion mostly because the real risk reduction is not nearly as much as proponents claim. Especially as related to concussive injury. I was overzealous in my interpretation of your comment, and mis-read that you were claiming that helmets were useless against all injury.