List of questions for knee pre-op assessment

I am writing a list of what to discuss at my pre-op assessment. Any advice for what to include? Has anyone had problems with lymph-oedema? I have L-O in my R breast which hasn't (thank goodness) progressed to my arm but have been advised to watch out for infections. Also I'm worried about contraindications of meds and vitamins etc I am taking. Last time I had surgery I found out just in time that evening primrose oil can be a problem (nurse had to look it up).

GG