Every case if different - I had a terrible car crash in 1970, where all my right side was smashed - and was in traction with a pin through my knee for 4.5 months (7.5 months in hospital and 2 years to learn to walk again). Despite one leg being 2.5cm (1 inch) shorter- I adjusted and went back to normal life.
For me, that meant starting to ski again 5 years later- and later, aged 50, learn to snowboard. Two things really helped - swimming and more swimming- and Tai Chi (which meant I realigned centre and never had back problems).
Had the really bad, injured knee done 3 years ago and it was very hard to recover. Funny how opinion changes from 1 country to the next, from one surgeon to the next, and of course, from 1 person to the next. My surgeon advocated a knee movement machine- and lots of physio. I know some here who say those are not needed and possibly have a negative effect. We will have to agree to disagree on this- lots of exercise and hard work, and then ... swimming again- up and down legs rather than 'frog' ... Personally I feel all the above really helped.
That knee will never quite feel my own - but it is solid- with good muscle tone. I had the second one, which had to do so much work to support its injured twin - last year. Only half replacement required. It was like light and day- what a pleasant surprise- knee machine again for one month, twice a day- lots of physio, lots of hard work- lots of walking and swimming. I know, again, some disagree- and we will have to disagree to
This week, we met up with DD1 and sil and grandchildren aged 9 and 12, in the Alps. Got my boots and skis on- got to top of chairlift and thought 'oh my ... will I be able to do it?'
Hesitated for a few seconds, breathed, turn my shoulders to the slope into position- and woosh off I went. Rock solid, no pain. Took it fairly easy first piste- up again - and then it all happened- big carves, short turns - ma-gi-cal. And with grandchildren, OH, DD1 and sil all around me cheering me on - it was amazing. Only did 2 days- mostly reds and a few blacks for the soul absolutely loved it. OH taking me to our local slopes next week for 68th BD - can't wait.
I wish I had them done sooner- but was told in UK I had to wait to be 65. Surgeon here in Switzerland said I should have done them at 60 or earlier.