Paul Hanagan is facing a spell on the sidelines after suffering a fractured T6 vertebra in a fall at Newcastle on Saturday evening.
Hanagan's mount Requinto Dawn appeared to clip heels before stumbling a furlong out in the penultimate race on the card, a six-furlong sprint handicap.
The dual Flat champion jockey was attended by medics on course, before being taken to hospital for X-rays and further assessment.
He stayed in hospital overnight and his agent Richard Hale said on Sunday: "He has a fractured T6.
"He was scanned and it's a stable fracture."
Requinto Dawn, trained by Richard Fahey, was reported to be unscathed following the incident.
