Smoking after sugery is a bad idea. This will make you heal much slower and they often recommend smokers not to smoke for the first 6 weeks after an operation.
I say - go for a vaporizer so you don't get all the toxins from combustion.
I just had a knee surgery and used the vaporizer. Only thing bad about it was the first couple of weeks the high would make me notice my knee more, so it actually hurt more after smoking - probably has something to do with faster racing blood or something.
I wouldn't smoke right now if i was you, but i'm sure will survive ;O)