Lindsey Vonn's rehab progresses to stationary bike

Five weeks after an Olympics crash that nearly led to amputation of her left leg, Lindsey Vonn's rehabilitation has progressed to riding a stationary bike.

Vonn, 41, has undergone five surgeries since suffering a complex left tibia fracture after clipping a gate and sailing off course 13 seconds into her Feb. 8 run in the women's downhill at the Milan Cortina Olympics. After being hospitalized and undergoing four surgeries over nearly two weeks in Italy, Vonn returned to the United States and underwent a fifth surgery.

She posted earlier this month that she had finally returned home and faced "a hard and painful journey" ahead.

That journey has progressed to a stationary bike, with Vonn posting a short video to social media on Friday.

"Guys.... I'm biking!! Starting with 5 minutes... making progress one day at a time."

Vonn previously said that the damage to her leg was so great that she might have had her leg amputated if not for Team USA's orthopedic surgeon, Dr. Tom Hackett, quickly treating the resulting compartment syndrome from the crash by performing a fasciotomy.

With compartment syndrome, the excessive pressure building up inside a muscle from bleeding or swelling restricts blood flow and can lead to permanent injury if not treated quickly.

Friday was Vonn's first social media update since March 8, when she shared a clip of moving from a wheelchair to a scooter at home.

Coming out of retirement with a partially rebuilt right knee, Vonn was considered a medal contender at the Olympics before her final World Cup race a week before. In that downhill, she tore her left ACL, though she said she still could ski in the Games.

Vonn was in search of her second gold medal in the downhill, having won in 2010 in Vancouver. She also