I don’t want to scare you off the surgery.
As I tried to explain, for the first one, the vets had me a basket case about not letting her run, jump, crate all the time, etc.
For the second one, like kids, I wasn’t so anxious, and although she didn’t come for walks with me for a couple of weeks, eventually, I let her walk when she started to bear weight. The whole thing was not letting her bolt, as she will do when she sees someone or hears someone(Miss Greeting committee).
It was 2 months to total recovery, probably 2 weeks of serious restraint, and then slowly increasing it, but she was always leashed during the first month or so.
I would look into the suture surgery given her age.
In all truth, if the conservative approach doesn’t work, or she can’t go on walks ever again, etc, then I would opt for the suture or tplo or taa.
Would I do it for my lab at 11, you betcha. My dogs usually live till they are 14 or so, and I’d want those years.
I hope your dog responds to the conservative approach, but remember, life is about quality, not quantity.
I make my decisions mostly based on that, not on how old they are, etc.
Good luck.