Had knee replacement in December. Had to have it revised in August because the lower part came loose and was causing extreme pain.

Medical malpractice cases are nearly extinct in the state of WI. I wrote a blog on the difficulties of pursing a medical malpractice case at our law firm's web site last year under personal injury issues. The Milwaukee Journal-Sentinel did an excellent article on the difficulties as well, which you can and should read. If you feel strongly that the doctor screwed up, gather up all your hospital and medical records and have them reviewed by a malpractice lawyer. If they think you have a viable case, they will hire an expert (medical) to review your file to determine if there is something there. The statute of limitations is three years in Wisconsin for medical malpractice. You must file a lawsuit within three years from the date of the occurrence, or otherwise, your case would be forever barred.