<s>[INST] I had knee replacement in May 2013 and had so much trouble. Then after being in ER found out the dr may have made a mistake and went for 2nd opinion and found out the 1st doctor oversized the implant in the right knee. Now that doctor dismissed me via a letter. Is there a way I can find out if the 2nd dr made a mistake. Am still having a lot of pain. [/INST] Hi you had a knee replacement in 2013 and are having severe pain in the knee joint. In Your 2nd opinion, you were told that oversized implant was used. In my opinion, oversize implant generally is not the cause of severe knee pain. There might be some other cause of pain like referred pain from hip or spine, local pathology like minor fracture, or misalignment or some other pathology. I would suggest visiting the operating surgeon again. </s>