No, but I don't grip with my knees. In fact, I have my toes slightly turned out from my knee. Under FEI rules, women are now allowed a certain degree of toe turn because they realised a women's pelvis doesn't allow for the traditional toe in without causing problems. Might be something to look at?
Hi Anna ! Yes I have some knee problems, I ride since I'm a child so I don't know if it's directly linked but the pain got worst with time. So I decided to purchase the Flex On stirrups and now I don't feel any pain while riding, which was the case before and it was a real handicap ! I still have some pain sometimes, for example when I climb stairs after a long day of walk but it's nothing compared to what it was like before !