...of injury

No no.
If he could only think of real things he would destroy this dream of having no legs. Steamships loaves of bread girls Kareen machine guns books chewing gum pieces of wood Kareen but thinking of real things didn't help because it wasn't a dream.
It was the truth.
That was why his head had seemed lower than his legs. Because he had no legs. Naturally they seemed light. Air is light too. Even a toenail is heavy compared to air.
He had no arms and legs.
He threw back his head and started to yell from fright. But he only started because he had no mouth to yell with. He was so surprised at not yelling when he tried that he began to work his jaws like a man who has found something interesting and wants to test it. He was so sure the idea of no mouth was a dream that he could investigate it calmly. He tried to work his jaws and he had no jaws. He tried to run his tongue around the inside of his teeth and over the roof of his mouth as if he were chasing a raspberry seed. But he didn't have any tongue and he hadn't any teeth. There was no roof to his mouth and there was no mouth. He tried to swallow but couldn't because he had no palate and there weren't any muscles left to swallow with.

[Johnny Got His Gun, Trumbo, D.]