Welcome to your new knee, Timo!
I'm so pleased to hear that you had such good pre-op preparation. You know it would be miraculous if you could fully weightbear w/o crutches by Day 9!!! Maybe you've set the bar a wee bit too high if you were expecting to able to do that already?
My first piece of advice:
1. Take all the pain meds you can get your hands on!
So it's a little easier for you to exercise, exercise, exercise!
Second piece of advice:
2. Exercise, exercise, exercise! (
3. ice, ice, ice - so you have less PAIN and less SWELLING, thus enabling you to exercise, exercise, exercise!
In between, make sure you rest, rest, rest with your leg elevated and with a compression bandage / garment on if you can.
You need to do a little bit often to get it moving and keep it moving!
Don't compare yourself to others - you're right that your AS may make you a little slower than some..... You need to work CONSISTENTLY to try to get as much BEND as you can in the first 4-6 weeks, but if you need a manipulation under anaesthetic because you can't achieve it, don't take it personally( many seem to see it as reflection of themselves - did they not work hard enough??? etc...) as I have never been able to predict who will and who won't need one (quite a few do).
Some of my most motivated, youngest and hardest working patients need an MUA (manipulation under anaesthetic), so whilst it's annoying if you need to go back into hospital for a day procedure don't ever view it as a black mark against you!
Hope you are able to get some quality sleep (pain meds are your friends...) - then you will have lots of energy to EXERCISE! ( insert maniacal physio laugh here.....