i have a sharp pain on the top of my knee cap, it only hurts when i touch it or if i nail down on the knee it is a very sharp pain. i can move something real small in the top of the knee and when it hits that spot it hurts to the touch. I have a vary bad back and i need to kneel on one knee to pick up things. it does not hurt to bend or walk. just when its touched. when i feel around the sore area it almost feels like a vain.
does any buddy know what that would be? thanks