Had part knee replacement 6 months ago , still as bad as it was b4 had it dun if not worse. pain really bad?

Knee pain: You need to go back to the orthopedic surgeon for another evaluation and possibly another scan to find out the etiology.

Pain control: You need to have re-evaluation with your orthopedic surgeon who operated on you. You will need to be also evaluated by a rehabilitation medicine specialist for managing pain and for prescribing physical therapy.