JT McNamara remains in a stable condition following the serious neck injury he sustained at Cheltenham on Thursday.
The 37-year-old was injured in a first fence fall from Galaxy Rock in the Fulke Walwyn Kim Muir Challenge Cup and was airlifted to hospital after being treated by the on-course medics.
Conscious following the fall according to officials at the track, the leading amateur rider was put in an induced coma before his transfer to Frenchay Hospital in Bristol.
McNamara underwent surgery on his fractured C3 and C4 vertebrae on Friday.
A statement issued by the Injured Jockeys Fund read: "JT McNamara remains stable in an induced coma in Frenchay Hospital, Bristol.
"Further scans are planned and another statement will be issued as soon as there is more news.
"Whilst visits to JT at the moment are not appropriate, JT's family are extremely grateful for all the kind messages and support."