Wednesday 25 May 2016 14:27, UK
Sammy Jo Bell's injury could be more serious than first feared, with the rider undergoing further examination.
Bell was injured at Carlisle last Friday when her mount, Royal Duchess, reared up and fell on her on the way to the start. After a visit to Carlisle Infirmary, she was diagnosed with a cracked pubic bone.
However, she subsequently went for a second opinion at York District Hospital on Tuesday and a CT scan revealed further complications.
Bell was taken from York to Hull Royal Infirmary, where additional examinations are being carried out.
Bell's boss, Richard Fahey, said: "They might have to put plates in her and all sorts.
"She's been transferred to Hull from York. I was surprised they let her out on Friday.
"We'll know a bit more after they've had a proper look, but it sounds like it's worse than they thought it was originally."