For whatever it's worth, my understanding of DeJean's injury is that it's not a knee, it was a broken fibula further down his leg (it's referred to most places as a lower leg injury). Reading between the lines, it sounds like there was the broken bone plus ligament damage maybe around the ankle or foot (similar to Stokes?) - last part is my assumption because I think bone actually heals faster than tendons and ligaments.
If it was just a bone it wouldn't bother me at all, it's the other stuff that does kinda freak me out.