Denis Lynch was injured in a fall during his victory gallop after winning the €50,000 Derby at the 5-Star show in La Baule, France, on Saturday.
The 36-year-old from Tipperary, who earned one of Ireland's two places at the Olympic show jumping events this summer, required stitches to his head and elbow. Lynch secured the Derby honours in fine style with the diminutive 13-year-old gelding, Night Train, which picked up just four faults over the course of natural fences.
Night Train has been in flying form recently with a hat-trick at Hagen, Germany, and a double at La Baule where he was also successful on Thursday. But during Saturday's traditional victory gallop, Lynch removed his helmet and had just replaced it without closing the clip when Night Train appeared to spook at a fence, sending his rider crashing into it at high speed.
There has been much debate about safety during prize-giving ceremonies with some lobbying for compulsory use of secured helmets at all times.