I find myself agreeing with funfun again.
1. Shoulder injuries can result from dropping the bar too high on the chest
2. shoulder injuries can result from the elbows not being tucked into the body (45 degrees) when lowering the bar
Due to orthopedic issues with the shoulder joint itself it may be that a person may need to adjust their form on one side or the other. The easy solution is just to use dumbells. As I've said before, inclining the body upwards seems to alleviate some of the rotators cuff tendons especially from number 1
It's an assumption to say that form is the reason why a person gets injuries from bench press