In reply to clp123:
You don't say what age you are which can have a bearing on the timescales.
I'm 54 and had a full replacement on my right hip last 25th Nov. Here's my timescale:
Mon 25th: 1130 went in to hospital; 1330 went in to theatre; 1515 out of theatre; 1600 on ward.
Tues 26th: 0900 physio - five minutes on zimmer frame (physio asked if I'd been doing my standing exercises to which I replied I did a 40 mile bike ride on Sunday) straight on to crutches and told to walk around the ward as much as I could. 1300 physio returns to show me how to tackle stairs. 1400 surgeon says I can go home. 1700 get picked up by my wife.
Next two weeks was the hardest as you have to lie on your back to sleep and let the muscles knit back together. By mid December I could lie on my non-operated side (I used a pillow between my knees to stop me doing sudden movements in bed).
After two weeks I only needed one crutch indoors but used two outside as people notice it more. Was walking round the block (about 2 miles!).
By Christmas I didn't need crutches indoors and only needed one outside.
5th Jan was 6 week follow-up appointment with surgeon who gave me the all-clear to ride a bike again but I decided to stay just on the turbo trainer to begin with. Could lie on my operated side.
By mid to end Jan I wasn't bothering using a crutch at all.
Feb went outside on the bike for the first time and have been building up mileage/fitness ever since. I can now comfortably tie my shoelaces on the right foot which was a real and painful struggle before the op.
As for what you can do, my surgeon reckoned I'd be able to run again - I've done short stints like running for the train which I simply hadn't been able to do for several years.
Summary: Get it done! The short term inconvenience of being laid up for a few weeks is nothing compared to the gains you'll get afterwards. Think of it like going to get a tooth taken out - you know it'll hurt but once the socket heals up it's never going to bother you again.