Depends what your having done.
Some seem to walk out the door post op and others struggle for a bit. Think it depends on how much muscle you have lost. Which implant you get and what they use to fix it there are different methods of gluing, strapping and pinning. They each have different characteristics and it could very well be that the most aggressive one which will take the most time to recover from will give you most life out of the joint and will also allow for a second one when it wears out.
Thats from an ex engineer that used to dable in bio engineering so in the grand scale of things pretty clueless.
The biggest thing in the Uk is to get them out the door ASAP to reduce the chance of secondary infections it appeared to me.