Knee injury 2 years ago x-rays show no fracture, dislocation or abnormality of soft tissue. mri mild to normal still continue to feel dull ache pain?

Let me explain: You have done the MRI and were normal? In this case we have two possibilities. 1-the pain coming from the knee itself, in this case most likely mild case of arthritis of some kind, i would try Motrin for a week if you feel better that your diagnosis. 2-if you did not feel better the in the knee coming from some place and we have were it is comming from. Good luck.