Hi, @cotonmama Welcome to Connect.
I think night pain after a TKR is fairly common. How long ago was your surgery? I have had two TKRs. The first was long before the opioid crisis and I was using one, I think oxycodone, just one at night for about three months. The second was in 2017 and by then, doctors were much more conscious of not prescribing these drugs for long so I was prescribed something for a much shorter amount of time and that surgeon had me splitting pills to cut down.
Many people find the NSAIDs like ibuprofen to give them the relief they need. I unfortunately cannot take them so had to rely on acetaminophen which helped a little but not as much as ibuprofen would have.

There are many discussions here on TKRs. The first link here is for one about feeling a “tight band feeling”. The second one is about a burning feeling. Do either of these fit your pain, or is your pain different in some way?
JK
https://connect.mayoclinic.org/discussion/has-anyone-had-a-tight-band-feeling-after-total-knee-replacement/?pg=8#comment-356570
https://connect.mayoclinic.org/discussion/burning-after-total-knee-replacement/?pg=5#comment-344018

Hi @cotonmama, I add my welcome. You'll notice that I moved your message to this existing discussion about night pain and trouble sleeping after a TKR. Click VIEW & REPLY to see the entire discussion and read through past messages. I'm also interested in the same questions that @contentandwell asked "How long ago was your surgery? How would you describe your pain?"