A bodily appendage
The limb held, but her shoulder didn't.
He dropped to a limb closer to the ground.
He focused on the taste of their warm blood and on tearing them limb from limb.
Then bandage the limb downwards, progressing towards the wound; repeat this several times.
As was suggested at the outset, railway accident statistics are useful only as showing how to make life and limb safer, though in pursuing this object increased economy should also be secured.