@mrobbinz I agree, do an ABI test that is a blood pressure of the legs. That is how they found my popliteal artery was pinched during my right TKR. ABI showed low blood flow and an angiogram confirmed it. I had a second surgery to have the artery cut open cleaned out the clot and patched the artery. May cold foot with purple toes was warm and pink. I still have some numbness and tingling but it is more tolerable. That surgeon said there could be cell and tissue damage that is causing the sensation I have. I also had EMG that showed nerve damage. I am now 2 years out with continued knee pain (found the plastic spacer between metal parts in too thin which is causing the instability of the knee) with a fractured knee cap (brittle from no blood supply for 60 days) and some numbness and tingling in the foot with numbness on the outside of the calf. I would not wish anyone to go through what I have been through. Good luck with you TKR issues and be an advocate for yourself.