Hang on in there parky. The swelling will reduce and you’ll be able to face the stairs. I used a wrap around flexible ice pack holder which secures with Velcro). it stayed on my knee without problem for the time advised in the accompanying leaflet and I’m sure helped. Elevated both legs as that was more comfortable, the swelling soon went
I found I could sit on the bed, lean back and swing both legs up, not elegant but it worked
My tkr was last September. I was fully mobile quickly, easier for me as we live in a bungalow. Some of the physios exercises I did, some I didn’t as they aggravated a spinal issue. Although I exercised it was far less than recommended, I found gentle walks and ordinary life far more helpful.
Discharged with two sticks and a frame. The frame was initially useful for night time toilet trips but abandoned after a week, the sticks well before the six week checkup.
My worst day was day four, really down and fed up. The worst week was week three when I hit plateau and thought I’d never mend properly. Silly as I was very mobile, walking outside and only using paracetamol for pain relief. I did see a private physio who knows me well, she offered encouragement and reassurance also helped get the leg straight, bending it was no problem once the swelling decreased.
It seems all consultants are different in their advice, at my checkup mine said he’d rather patients did normal things than worried about physio.
Eight months on I can get down on the floor and up again, climb stairs, walk as far as fibro impacted energy allows, do my garden, keep up with a seven year old hurricane and generally forget my knee.
The surgery nurse recommended Vaseline for the scar once the stitches were out. I’ve no idea if it’s general advice but it helped me.
The early stages can be difficult but they will soon pass. You’ll be fine I know it. Listen to your body. It’s usually right.