What kind of injuries are you dealing with? Anything chronic and persistent? Or is it little stuff that flares up if you do something to aggravate it?
In addition to what you already said (solid technique and foam rolling as a preventive)...
Robby Robinson says:
"[i]I believe in doing 20 reps [as a warm-up] for whichever body part we're going to do, before we start. That plays a big role in creating a better supply of blood to the muscle, and then I gradually increase up to my max weight.
I see a lot of the guys today are kinda [lowering] the weight down to a certain point, putting some stress on the muscle, and pushing back. But I think that using full, complete reps is one of the keys to my health.[/i]"
Dave Draper says:
"[i]Injuries are avoidable if the lifter is sensible, cautious, controlled, and mildly motivated. The lifter with these personality traits generally lasts seven to 10 days under the iron before he escapes.
A determined bodybuilder is driven, daring, intense, and injury-bound. Comes with the territory. It's the last rep and the extra plates that kill you. These are also the ones that build large, powerful, and well-shaped muscle.
What's a lifter to do? Eat right, rest a lot, warm up plenty, focus on muscle engagement, maintain proper form, take exertion to 99%, not 101%, and learn from the inevitable injuries that strike you down.[/i]"
Those two guys have been lifting for over a century combined. I'm sure you can figure out some useful advice from what they say.