"Brother... let me help you," Thor knew his brother was angry at him lately. The god of thunder was quite sure that Loki hated him. He sighed "Look I know you are angry, but we need to go home and get you medical care."
He could see Loki was in a lot of pain. Being as careful as he could he picked up his brother. He made sure he wouldn't hurt him. To Thor Loki was very light, he knew that he just wounded his brothers pride most likely. 
"And don't struggle it will only hurt more."