Mikey O'Connor is being detained in Cork University Hospital with multiple rib fractures and chest trauma following a fall at Killarney on Friday evening.
The amateur rider was airlifted after his tumble from Moon Dice at the third-last fence in the Ladbrokes Handicap Chase. His condition was giving cause for concern, but Irish Turf Club chief medical officer Dr Adrian McGoldrick reported on Saturday morning those fears had been allayed and that he had improved.
"He had a very nasty fall in Killarney. He had potentially very serious injuries. He was flown by air ambulance to Cork Hospital by my colleague Dr Adrian Murphy as he had potentially serious chest injuries," said Dr McGoldrick.
"I must compliment Dr Murphy for the care he provided on track, he diagnosed multiple rib fractures and made the right call to have him airlifted to Cork. Mikey is still having monitoring of his heart and abdomen, but everything seems to have settled.
"I have spoken to the hospital this morning and he was much better overnight. Earlier on there was concern he might have bruising to his heart and to his spleen, but that has been ruled out overnight. His main injuries are multiple rib fractures and chest trauma.
"Mikey got fantastic medical care on the track and we are very happy with him today. He is stable and walking around, but he will be out for up to six weeks."
Moon Dice had been a chance ride for O'Connor after Robbie Power was stood down following a fall at the same fence on Caolaneoin in the previous race. Power is said to be none the worse.
Barry Geraghty and Adrian Heskin were also stood down after falls, but escaped serious injury. "Barry Geraghty, Adrian Heskin and Robbie Power were stood down and had soft tissue injuries. They are all fine," said Dr McGoldrick.
Ben Dalton and Ryan Treacy suffered falls at Down Royal and were taken to the Royal Victoria Hospital in Belfast.
"Ben Dalton had a nasty concussion but was released from hospital on Saturday morning," said Dr McGoldrick. "He was out for five minutes after the fall, but he is absolutely fine. He will be stood down for six days, as is standard procedure after concussion, and he will then be re-assessed. Ryan Treacy has a shoulder injury and he has to be reviewed after the weekend."