Lauren Hough has announced the retirement of the 17-year-old Selle Francais, Quick Study (Quick Star—Sirene de Plantro, What A Joy XX), after a decade-long partnership that traveled the world many times over.

“It is with great pride, and a touch of sadness, that I am announcing the retirement of my partner of 10 years, Quick Study, better known to his friends as Joey,” said Hough from her winter base in Wellington, Fla.

U.S. show jumper Lauren Hough sustained a knee injury on Jan. 24 from a fall while schooling a horse at her Wellington, Fla., stables. Hough, 40, served on the 2000 Sydney Olympic Games team and the 2010 Alltech FEI World Equestrian Games teams and has jumped in six World Cup Finals. She rode Ohlala to team and individual bronze at the 2015 Pan American Games (Toronto).