WEEK 11: UC Davis @ Idaho The 49ers have been beset with numerous, serious injuries this season as well. They have a huge investment in the very best training and care for their athletes but they still have been decimated by injuries. I'm all for looking at the things you have mentioned but I tend to believe that it's just been a terribly unfortunate year.
I do wonder, that considering how much bigger, stronger and faster players are nowadays, that we may have reached a "breaking point" where the human body just can't sustain the violent levels of contact on a consistent basis regardless of top notch training and equipment and, hence, more and more injuries.