Amateur rider Alan Berry is expected to be sidelined for about eight weeks after fracturing a vertebra in his back in a fall at Punchestown on Tuesday.
It is described as a "stable" fracture and Berry is not expected to be detained for much longer in Naas General Hospital, County Kildare.
The brother of top Flat jockey Fran Berry, he sustained the injury when he fell after his mount Harvey Logan clipped heels and slipped up less than five furlongs from home in the Goffs Land Rover Bumper INH Flat Race.
The horse is owned by JP McManus, for whom his father Frank is racing manager.
"He has a fracture of his vertebra in his back and he will probably be out of action for about two months," said Dr Adrian McGoldrick, the Irish Turf Club's chief medical officer.
"I haven't had the final word yet but he could be out of hospital today. He has a stable fracture."