The TV personality partially dislocated her shoulder after “going flying” while practising with her partner, professional skater Matt Evers on Thursday.
Speaking to The Sun on Sunday, Denise said: “I’ve taken a few tumbles since we started training but with this one I knew immediately it wasn’t good.”
She continued: “I was rehearsing with Matt, hit my toe pick and went flying.
“Straightaway I knew I’d done something. I just thought, ‘Please don’t let it be a break’.
“The on-site medics and physio checked me over immediately and my shoulder was quickly iced.”
Denise said doctors told her she had suffered “partial dislocation and tendon damage”.
“It’s really affected my ability to move my left arm,” she told the newspaper.
She added that she “must say an enormous thank you” to the “incredible” NHS staff who cared for her at a time when they are “so overstretched” because of coronavirus.
According to the PA news agency, Denise is still expected to perform in Sunday night’s launch show, despite The Sun reporting it was “touch and go” if she would be able to skate.
Dancing On Ice begins on Sunday at 6pm on ITV.