Is Derek Hough done for the season?! Dancing With the Stars fans were devastated to hear that the fan-favorite pro suffered a serious injury while rehearsing for the ABC reality hit's 10th Anniversary Special on Monday night, resulting in a trip to the hospital. And on Good Morning America on Thursday morning, Derek's sister and DWTS judge Julianne Hough gave an update on his condition. Derek is set to remain in Los Angeles to rehab his injuries, and was photographed walking with crutches on Wednesday while heading to a dance studio.??