The TV host joined the list of injured celebrities during rehearsals for tonight's show after hurting his head during training.
Sam, partnered with skating pro Alexandra Schauman, was left unable to even walk following another injury to his leg.
“Yesterday Sam couldn’t even stand on the ice," a source told The People today. "He spent all day having intensive physio.
"He missed filming rehearsals which is a real disadvantage. Everyone hopes he will be on the ice tonight.”
Writing on Twitter, Sam told his followers: "Just started the dress run. I have a feeling tonight’s show is going to be dramatic. Ultimate skills week has been the toughest yet. Sam"
Dancing On Ice continues this evening on ITV1.