Mpirrucel,

You mention "ligament instability". Do think an unstable ligament is the underlying cause of the condition you have? If so, why do you or your doctors think so?

I had two TKRs nine and eight months ago. In the posterior-lateral region of my left knee there's a tightness of what I perceive to be sinewy soft connective tissue -- I'm guessing either a ligament tendon -- which becomes very painful at a certain point of flexion. For many months it would audibly "snap" or "pop" as if it were getting momentarily hung up or caught on some other anatomical part in the back side of my knee, and then suddenly painfully release. While it no longer snaps to the same degree it once did -- a condition I never had pre-surgery -- it's still very painful when I go up or downstairs, get into or out of a car, get dressed, or try to stoop or squat. My primary care physician just yesterday gave his approval for me to have an MRI done on both knees -- my other knee is having a similar but not identical problem in the same postero-lateral area -- to see if any of the soft tissues in the affected areas can be seen and a proper treatment prescribed.