Bieber`s swollen knee not serious

London: Teen pop sensation Justin Bieber is relieved after doctors declared his "busted" knee was not a serious injury.

The "Baby" hitmaker was left limping on stage at his concert in Cleveland, Ohio, Thursday after an accident during the show, reports

"Busted my knee last night in the middle of the show. Not fun. Finished the show with a sweet limp. Knee is swollen today but all good. Spending quality time with mom," Bieber posted on his Twitter account.