I always found that just bringing a notebook was great. In the notebook I had several pages:

1. Current medications and doses and things I tried but no longer take. Also any treatments that helped or were unsuccessful that I've tried.

2. Timeline with important dates (date of injury, dates of procedures, dates new symptoms started, etc).

3. List of current symptoms and notes on whether they are all the time or intermittent.

4. My goals for treatment.

5. Any questions I have or things I want to go over with the doctor.

I find that having all of these things with me and written down prevented me from forgetting things when I was "in the moment" at appointments. It also helped the doctor to have all the information in a clear and thought out way. Sometimes they would photocopy these things...especially in a first visit...but I always brought them with and always update the questions/things to go over page for each visit and put the date at the top. It helped to bring a pen with too so I could write down the answers to those questions.