Horse Kicking out After Turning a Barrel

[kjmezz]

I have a problem with my mare; sometimes after turning a barrel, she takes about a stride or two and then kicks out with her right back leg. It is not a buck, she just kicks straight out.  I tried to find consitency with whether she is making a right or left handed turn, but it has changed.  At first i thought it was her just being nasty, but now starting to think there is something bothering her.  She doesn't do it all the time, but it has become more often. 

[ez]

We had a horse that did this several years ago. When we went to the vet, it was diagnosed as hock problems.