I also have the same tight nimbness in lower leg. Surgery was Jan 2020.
I am beginning to think the problem is more of a peronial nerve issue. I do not have foot drop, thankfully. No actual knee pain. If it truly is nerve trauma, there may still be a small hope for at least some reduction of this feeling.
I have wondered if the tourniquet used during surgery to control loss of blood and to keep the surgical field dry, may be the predominate cause as my sciatic nerve was screaming for about 3 months post surgery- the nerve bifurcates and also becomes the peronial nerve which also serves the lower leg. No dr has given me a yay or nay answer in that direction though. Hopefully taking B vitamins will help nerve healing. At least I had no infection and I can walk.