Originally Posted by ero-sennin
I believe this is a myth. Injuries during lifting occur because people don't respect the weight and use sloppy technique. With good technique, I don't see any reason why someone should get injured lifting above 85% of 1rm. Pavel Tsatsouline addressed this very point in one of his strength training books.
It takes years to nail technique on the powerlifts, and years and years on the Olympic lifts.. (And even then it's still a risk). Boxers don't have time like that to kill.