Is Hancock dinged again? That is only reason why I can think he is not taking snaps from Poyer. Poyer was very good at one time, that time has passed unfortunately.
Muscle injuries are different than joint injuries. Of those 3 teams combined you listed only 1 player is out with a muscle strain(McLaurin). Bills have 6.
I don't mean lazy, should have been more specific about player preparation. It could something as simple as not enough sleep, dehydrated, diet, alcohol, drugs.
I don't think I have ever seen so many groin, hammy, and calf injuries on one team. Either the players are not doing what they need to prepare for games and practice or there is a deficiency in their strength and conditioning program. Very reminiscent of drought teams.