What can i do, and how can I sue my doctor for lying to a judge in court about me in medical records they have on file?

Based on the office visit summary, I walked around the office, with a steady gait, showing no distress or difficulty when moving around. I am a quadriplegic, and am confined to a wheelchair. The judge read the paper from this doctor, and asked me why I don't get a job as a plumber, my former line of work. I live in an electric wheelchair, and cannot walk, much less be a plumber. The summary also gives my weight, pulse, and heart rate, none of which were taken at the office. I have been told I can sue this doctor and/or his office, for falsifying my medical records. What would be my first step in doing this?.