thats basicly what i had, they still do cause me trouble now, something to do with a muscle or tendon that goes from middle of thigh to just below knee being too tight and sorta pulling your knee. physio just did some streches with me, but i still think theres something else because it never really got that much better, would be nice for you to post after you have visted ur doctor, may inspire me to try the docs again, now a days i just let it get on with it and just ignore the pain.