Britain's leading female flat jockey Hayley Turner will be out of action for several weeks after suffering a broken ankle in a fall at Bath.
The 28-year-old's agent Guy Jewell said the rider was "comfortable" after an operation on Thursday.
"I think she'll be out for six to eight weeks but sportsmen and women are often back quicker than the norm," he said.
Turner was on her way to the starting stalls when her mount Rose Aurora dumped her to the ground on Wednesday.
The filly reared up and landed on the dual Group One-winning rider.
Turner wrote on her website: "I was in a lot of pain and felt very sick, the ambulance team were there immediately, I then started to be a bit of a diva myself, the gas and air soon put a stop to that - loved it.
"I have now pulled myself together, it could have been so much worse, just my ankle, no head or spin injury. It's simply part of our job, you have to cherish the highs and brush off the lows.
"I've had an amazing season and at least now I have time to celebrate it."
Turner, who has ridden 83 winners so far this year, has been enjoying the most successful spell of her career, riding her first two Group One winners on Dream Ahead in the July Cup and Margot Did at York's Ebor Festival.
Jewell said she is unlikely to be fit to ride Margot Did in the Prix de l'Abbaye at Longchamp on 2 October, but indicated she could return before the end of the British turf flat racing season, which finishes on 5 November.
"Her first priority is to get back fit and then we'll start looking for a target," he said.
In March 2009, Turner was out of action for four months after being knocked unconscious on the Newmarket gallops when her horse broke a leg in a stalls accident.