When players take more damage than they can absorb with Stress, they take an Injury. The specifics of the Injury is determined by the GM.
It can be difficult for GM's to come up with injuries on the fly. These tables are for GM's that aren't sure what to do. It's recommended that the GM roll two or three times and pick the Injury they like most. This is by no means a comprehensive list, and is only intended to jog the GM's imagination.