One of our previous dogs had bilateral ruptured cruciates. She had surgery at the Vet Hospital in Glasgow. The first op was a Tightrope procedure, and the second was a tibial plateau leveling procedure. After the first op she ended up in cage rest for 9 weeks, then another 6+ weeks after the second one.
Unfortunately, just as she was getting back to being more active, she dislocated one kneecap (apparently this is a known but uncommon complication of the surgery) so needed a third knee op to deal with that - and about 3 months of cage rest and very limited activity. She also developed a gastric ulcer from the pain meds she was given for the ulcer, and needed more medication and a special diet!
But it was all worth it, and she did get back to about 90% of her previous activity - maybe more. It was a tough few months for us all.
She was a very active dog but she coped very well with the cage rest - we put the cage in the front room, so we were about most of the day, and she was happy to sleep in there at night.
The hospital tried to sell me a sling, to use under her belly when we were walking her out to the garden to do her business - but I rolled up a towel around a spare lead and tacked it in place and saved us £££.
The total cost was just north of £10,000, but our pet insurance paid for everything without a murmur, apart from the specialist food she needed after the ulcer. They paid the vet hospital directly too, which was really helpful.
I’m happy to answer any other questions you may have.