I remember having knee surgery myself, it fucking sucked, the recovery period. Spent ages having to use crutches, after they removed some bone from inside the joint, accessed by slitting the tendon, hurt like a bugger and it put an awful lot of pressure on my wrist joints, made them, and my hands, shoulders all hurt.
And worse, the surgery didn't work, plus they left me with nerve damage meaning I have to take a really strong muscle relaxer, thats easily able to knock me out cold, or drop my blood pressure the point I have to stand up really, really slowly (tizanidine/zanaflex)or else suffer a constant severely painful muscle spasm in my calf, from where basically one set of nerves causes contraction, the other, relaxation, and if it can't relax after contracting the result is a really painful stiffness and spasm.
My bitch though, is one of my hotplates...worlds shittiest most irrational design for a mag-stir plate EVER. Control only over the stirring speed, and not the heat. Heat is either on or off, and its either 80 'C, or nothing. I have others though. I was waiting AGES for the fucker to get up to temperature last night, waiting and waiting and waiting,and it never did get to the point where the vacuum line could start causing the toluene to boil over. Going to have to do it again today.