Medical Q&As

Knee replacement

My dad had a total knee replacement about nine months ago. He is still in bad pain. He is convinced they put the new knee in wrong. Could this have happened?

It is unlikely that the new joint was fitted incorrectly. However, it is unusual for a patient to continue to experience pain nine months after surgery. During the operation the arthritic joint is removed and it is replaced with a new joint that is firmly embedded into the near ends of the thigh and shin bones. Bone cement is used to secure the fitting in place. Sometimes a fitting can work itself loose particularly if the person has experienced a fall. I think your father needs to be re-assessed.