When Woohyun was in Taiwan on 160721 for the MTV Asia Music Stage, he also did an interview for the Taiwanese media. In it, he explained that it was an old injury - a small wrist fracture which had become worse again. He insisted he was fine, that it hadn’t been caused by dance practices and that he just needed to rest it.
(Unfortunately I couldn’t find it with English subtitles, but this will have to do!)
He has said himself that there is no reason to be concerned, so let’s just wish him a speedy recovery and hope he heals fast.
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