16/01/2014 09:29 GMT | Updated 02/04/2014 08:59 BST

Michael Schumacher Skiing Accident: F1 Legend Could Be In A Coma 'For The Rest Of His Life'

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Schumacher has been in a coma since 29 January

Michael Schumacher could be in a coma for the rest of his life, according to medical experts.

German news magazine Focus reported "Schumacher could be in a coma forever" after consulting experts on his condition.

The Formula 1 legend remains in a critical, yet stable condition at a Grenoble hospital after he hit his head on a rock while skiing in the French alps on 29 December.

Schumacher, who turned 45 on earlier this month, has also had an operation to remove a small part of his skull in a bid to relieve pressure on his brain. While in a coma, oxygen to the brain is reduced, and it therefore works less.

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Dr Richard Greenwood, an acute brain injury specialist at the University College London Hospital, said the German may have to adjust to a very different life.

"If Schumacher survives, he will not be Schumacher," Greenwood said in the Times.

"He will be [Joe] Bloggs. His rehabilitation will only be effective if he comes to terms with being Bloggs.

"That is a very, very hard process to take people through. They need to come to terms with their limitations — the fact they have changed."