Hello and welcome to HCM,
of face is unlikely to be associated with the total knee replacement
What is your age and sex?
Flushng is a common symptom seen in post-menopausal women.
Besides these symptoms are suggestive of some nerve related disorder affecting one side of the face.
You need to consult a neurologist
for these symptoms.
The knee replacement surgery will produce symptoms localized to the site of surgery.
Thanks and take care
Dr Shailja P Wahal