Dr. Eddies Wingman
Brighter than thousand_suns
No surgery, luckily but I have to wear a kneecap for a month and use some drugs. The reason of pains on the back turned out to be spasms all over the muscles. I'm currently resting, exams will be fine, I've got a medical certificate for resting.
Sounds better than feared, then - but still pretty painful, I guess. Take it easy for some days.