Schumacher Still Critical After Skiing Accident

An avid skier, the former Formula One world champion, Michael Schumacher, skis in the northern Italian resort of Madonna Di Campiglio in this 2005 photo.

Retired Formula One racing champion Michael Schumacher remains in critical condition one day after suffering severe brain trauma in a skiing accident.

Schumacher underwent immediate surgery at a hospital in the city of Grenoble on December 29 after arriving in a coma.

Schumacher's fellow athletes, including former Ferrari teammate Felipe Massa, Formula One driver Jenson Button, and retired German tennis star Boris Becker, have used social media to wish him a quick recovery.

Schumacher's wife, Corinna, and his two children are at his side at the hospital, along with Jean Todt, the president of motorsport's governing body, the FIA.

The 44-year-old Schumacher reportedly hit his head on a rock while skiing off-piste in the resort of Meribel in the French Alps.

"Mr. Schumacher arrived at the Grenoble hospital at 12:40 [local time] following a skiing accident that happened in Meribel in the late morning," Jean-Marc Grenier, an official from the Grenoble University Hospital Center, told journalists within hours of Schumacher's arrival. "He was suffering from severe cranial trauma with a coma when he arrived, which required neurosurgery. He is still in critical condition."

Officials at the resort said he was skiing with his 14-year-old son Mick when the accident happened.

His manager said Schumacher was wearing a helmet. He was said to have been conscious when rescuers arrived but later fell into a coma.

Schumacher suffered severe neck and spinal injuries in a motorcycling accident in 2009 in Spain.

Schumacher had initially retired from sports in 2006 but made a comeback in 2010 and raced for three years with Mercedes. He won two world titles with Benetton and five in a row with Ferrari. He retired for a second time at the end of the 2012 season.

He is ranked as the most successful Formula One driver ever, with a record 91 victories.

Based on reporting by AFP, AP, and dpa