I don't think sciatic nerve pain is considered unusual after TKR. I have struggled with it off and on since my TKR surgery in June 2022. Here' s why: The damage to my knee joint was severe and had caused me to walk knock-kneed. The surgeon told me that being knock-kneed affected my gait and the alignment of my spine. To remedy this, in addition to the joint replacement, during the surgery the doctor straightened my leg by shaving part of the bone. That meant moving some of the nerves in my leg to get to the bone. This procedure aggravated the sciatic nerve on the same side of my body as the surgical knee. So yes, I experienced sciatic nerve pain for several difficult weeks after my TKR. I'm still having sciatic pain off and on (however, not as intense), but my PT therapist assured me this pain should resolve as my spine realigns itself. I did an internet search and found a few exercises that help relieve the pain. It will get better -- don't give up hope!