Lindsey Vonn trains with knee brace after completely rupturing ACL one week before Olympic return

Olympic gold medalist Lindsey Vonn was back to training just days after she "completely ruptured" her ACL in a crash, a setback that came only a week before the U.S. ski star was due to make her Winter Games return at Milan Cortina.

In a video posted to her social media on Thursday, Vonn performed a series of workouts including squats, box jumps and side lunges. She was wearing a knee brace on her left leg as a result of the numerous injuries she sustained after crashing during a World Cup race in Switzerland on Saturday.