well friend,
let me know your age? whats your occupation?what particular movement u do that shows pain is it squat or knee bending or extension?till how long your carrying pain?till now what you did for it?do you have early morning stiffness in finger joint?what u do to relieve it and what is the aggravating factor?and do u have any past history of knee injury?
try to get me all the answer so that i can speak something