Bono says he doesn't know if he'll be able to play guitar again.

Writing on the U2 website, he says recovery from injuries sustained in a cycling accident in New York's Central Park in November has been more difficult than he thought.

He says he broke his hand, shoulder, elbow and his face.

But he says the real injury was to his Irish pride, as it was discovered that under his tracksuit he was wearing yellow and black Lycra cycling shorts, which he admits to being "not very rock 'n' roll".