Schumcher, who turns 45 Friday, suffered critical head injuries when he fell and struck a rock Sunday while skiing on a family holiday in the resort town of Meribel in the French Alps. He was first taken to a local hospital and then flown to Grenoble.
The German still remains in a medically induced coma after undergoing a second surgery Monday night after a brain scan showed signs of improvement. His body temperature has also been lowered to between 34-35 degree Celsius to reduce swelling in his brain.
Schumacher's agent confirmed that the accident had cracked his helmet, which doctors credited for giving him a chance of surviving.