The surgeon who performed knee surgery on Real Madrid ace Kaka believes that the player risked his career by featuring for Brazil at the World Cup finals.
The 28-year-old could be sidelined for up to four months due to damage to his left knee, with Belgian doctor Marc Martens shocked by the extent of the problem.
He told Marca: "As soon as I saw him I could tell it was serious. His career has come under serious danger.
"He started playing (in South Africa) with some niggling injuries and ended up with unbearable pains.
"I understand that it's a unique competition and that there was pressure, but he pushed himself much too hard against Holland and Chile. He admitted he was in a lot of pain.
"It could have finished his career because it's a very serious injury - it could have destroyed him.
"But thank God he has had the operation at the crucial moment and everything has turned out wonderfully."