Ferrari driver Felipe Massa remained in “life-threatening” but stable condition on Sunday despite “reassuring” results of his surgery on multiple skull fractures, a doctor said. Peter Bazso, the AEK hospital medical director, told reporters that Massa would remain in an induced coma until Monday, but will be woken up periodically during that time. When asked whether Massa's life remained in danger, Bazso answered: “Yes, of course.” Bazso said doctors were able to “remove the broken bones and stabilize the area,” which was necessary since Massa arrived with “an open skull fracture and a contusion.” He did not specify how long it would take Massa to recover, or whether there would be any long-term effects of the injury. “At the moment, we have to overcome this life-threatening condition,” Bazso said, adding that a CT scan revealed “expected results after an operation of this type.” Massa's parents and wife arrived at the hospital Sunday after flying in from Brazil, and doctors woke Massa temporarily to check on his condition and so that he could see his family. Team principal Stefano Domenicali and several Ferrari staff were also on hand to support Massa's family, which included pregnant wife Anna Rafaela. The spring from Rubens Barrichello's Brawn GP car bounced into Massa's helmet as the 28-year-old driver reached speeds of about 190kph. The impact concussed Massa, who plowed into the protective tire barrier. Massa, who finished runner-up to Lewis Hamilton in the F1 championship last year, underwent emergency surgery Saturday, about an hour after being airlifted to the hospital. He was conscious at the time. The impact of the rear suspension part, believed to be made of steel, damaged the left side of Massa's helmet, ripping out the visor and leaving a long dent on its side. Blood was seen on Massa's left brow. The crash came less than a week after Henry Surtees, the son of former F1 champion John Surtees, died in similar circumstances an F2 race last Sunday. Surtees was struck in the head by a tire from another car, causing him to lose consciousness and drive into a barrier. Governing body FIA was expected to launch an investigation into the crash after several drivers and team principals called for safety measures to be re