Kaka requires knee surgery and has been sent to Belgium for further examinations.
“After medical exams and several further tests we suspect that he is suffering from a lesion in his meniscus which may require keyhole surgery,” Real said in a statement.
“If we lose him for some time it’s no drama, we have other players and that’s it,” said Real coach Jose Mourinho. “But he’s one of the best players in the world.”