Sirius didn't like the sound of this very much. 'It doesn't hurt me any more,' he tried to assure Remus. It was true! It had stopped hurting, so maybe that meant it was getting better. He looked over to Arcturus for reassurance, but found that his uncle was shaking his head.
'Let him see, Sirius,' he said quietly. 'It'll be alright. He's going to help you.'
After a pause, during which Sirius decided that they couldn't both be lying about it, he helped pull the blanket away from his injured arm. It looked wrong, bent to the side like that, and when he caught sight of it Sirius squeezed his eyes shut tight, as if not looking would change what was happening. To his dismay, when he opened them again, slowly, it still looked exactly the same, the dark sleeve of his robe not hiding the extent of the injury.