My young ortho surgeon (in his 30’s) sent me home with cryocuff machine for both my reverse total shoulder and my total knee replacement and it was awesome really the only thing that helped pain. Quit narcotics after a couple days because I dint think they did much of anything besides constipation. I believe I left in on up to an hour at a time with TKR because I was suppose to get up and walk every hour. Am 2 years and 3 months to date my knee is awesome!
Once surgeon has done their job your physical therapist ( mine is young 28 when I started with him, a DPT with many other credentials) should be your lifeline. I feel a great surgeon, a great therapist and hard work on our parts gets us back to everyday life.
Best of luck!