<s>[INST] hi my 16 yr old daughter rides and shows horses she has been having issues with her right knee when she is in the saddle and she is riding she can not control the swing of her leg she says its like her knee is broke her lower leg is like a wet noodle it swings with no control my ex husband took her to a doctor and he said its just growing pains and that its nothing do I need to be concerned should she wear a brace [/INST] hiwearing a knee brace while riding should be covering both knee  and leg upto anke, but that would make her to keep her knee and leg straight, i wonder if she would balance on horse back with only one leg in stirrup,you may tryit although, keeping horse pace in walking speed only at first, untill used to controlling horse by practice. </s>