Blue Hors Matine, silver medallist at the Aachen World Equestrian Games with Denmark’s Andreas Helgstrand, will not contest the 2008 Olympics.
The grey mare has not competed since injuring herself when falling off a lorry ramp on arrival at the 2007 Las Vegas World Cup more than a year ago.
Scans show that some damage to the mare’s tendon has not completely healed and Andreas and the stud do not want to risk running the horse below par in Hong Kong on veterinary advice.
Andreas plans to compete his 2008 World Cup ride, Gredstedgaards Casmir, at the games instead.
Blue Hors Matine and Andreas Helgstrand at the World Equestrian Games
Other notables who will not be contesting the Olympics include Danish rider Lone Jorgensen, who feels the Olympics are too soon for her talented eight-year old mare Donna Asana, and Belgian rider Jeroen Devroe, whose horse Paganini has suffered a tendon injury.
The British Olympic dressage team is due to be named on 25 June.