Not had anything major.

Had my tonsils out when I was young, and an arthroscopy on my left knee after a motorbike accident which left me unable to walk properly (and still cant ) and found I had snapped the crucia(sp?) ligament, caused cartilage damage and damaged my kneecap. Nowhere near as bad as some peoples injuries granted but bad enough for me!

I've been told that I may have to have my knee reconstructed as it has recently started to cause me problems and the knee cap keeps dislocating on a regular basis. Joy.