Singer Jewel's rehearsals for the new series of 'Dancing with the Stars' have suffered a setback.
E! Online reports that Jewel, whose rodeo star husband Ty Murray is also taking part in the series, has tendonitis in her knees and has not been able to rehearse for a number of days.
Writing on her blog, Jewel said: "My knees have been hurting so badly that I finally broke down and talked to Ty's knee doctor yesterday.
"He said I have tendonitis in my knees and that I have to start a course of medicine to try and bring the swelling down."
In a statement to E!, Jewel said: "I have had a minor setback in my training for 'Dancing with the Stars', but I am dedicated to getting better and showing the judges and America that I can cha cha with the best of them."