Jockey Leandro Goncalves was transported to the University of Kentucky Medical Center for X-rays April 7 after he was unseated at the start of the first race at Keeneland.
"He was awake and alert, and moving his extremities," said Dr. Barry Schumer, Keeneland medical director, in a statement from the track. "He was complaining of pain in his right hip and pelvic region."
Xmas Sky stumbled badly at the start of the $30,000 maiden claiming event at six furlongs, dislodging the rider.
Goncalves, who turns 31 on April 18, has had just three mounts at the three-day-old Keeneland meet, all for trainer William "Buff" Bradley, and is seeking his first win. On the year, he has posted a 33-33-33 mark from 290 mounts with total purse earnings of $867,077.
In his eighth year of riding in the United States, the native of Sao Paulo, Brazil, has 1,303 North American victories from 7,695 mounts and earnings of $25,873,434. In 2011, he won 298 races, ranking third in North America, from 1,492 starts. He had 267 wins last year, seventh best in North America, from 1,450 mounts.