There was a single horse that developed heat stress during a race and died. Table 6 below contains a distribution of the catastrophic bone injuries in this group of horses.
Total number reflects that some horses had more than one injury.
This was followed by the metacarpus where there were 8 fractures. Many of the horses with proximal sesamoid fractures also had significant damage to the suspensory apparatus. This most commonly involved the collateral ligaments of the fetlock joint, but also involved the suspensory ligment in 6 submissions. Only in one submission was the suspensory ligament ruptured without concurrent sesamoid, metacarpal, or first phalanx fracture. There were also 2 horses with skull fractures that occurred as a result of the horse flipping backwards and striking its head on the ground.