Hi, thanks for writing to HCM.
The presence of tenderness, swelling, itching and local warmth are commonly seen in the knee joint folllowing a total knee replacement
. These symptoms will usually vanish within 2-3 months time. These generally occur as a part of the healing process occuring in the knee joint.
I don't think these are much of a concern for upto 3 months.
If you are still worried about the situation, consult your treating doctor and discuss the issues.
Hope this information is helpful. Good day