In response to stevegm's comment:
Perhaps you're asleep now JM? The game was certainly rowdy in the 70's, and I'd agree more volitile than now, but that didn't equate to the serious injuries we're seeing so often now. I remember it quite vividly thanks.
There were serious injuries aplenty, the only difference being how they resulted. Today you have football issue shoulder pads, hard plastic elbow pads, and pent up masculine frustration (like ST last night). In the 70's there was just the classic stickwork, streetfighting and knuckles wrapped in tin foil. Same relative results, just different means.
Actually, it would be wonderful if there were stats showing the number of injuries relative to team and correlated to being the direct result of an opposing player's action per year or decade. However, they probably don't exist so we are all left to muse and use anecdotal evidence as you and I are doing right now. And, perhaps that's all that can be definitely said about what we are talking about: we are both guessing.
At any rate, enjoy the game tonight.