Lindsey Vonn now has a partner to rehab with as she recovers from her torn ACL and subsequent broken leg, suffered at the 2026 Winter Olympics. Her sister, Karin Kildow, is also recovering from a torn ACL, the Olympic skier revealed via her Instagram Stories on Wednesday, March 18. "Welcome to the Vonn rehab center," Vonn, 41, wrote over a video of her sister entering the gym on crutches.