Could blood pressure be related to swelling in only one foot/ankle, or would past knee replacement be more likely cause? My blood pressure today was 128/81, pulse rate was 69. I have been having problems with my right foot and ankle being swollen recently. I had a total knee replacement on jan 15 2010. Is the blood pressure ok, and could the swelling in ankle and foot have anything to do with knee replacement. My sister in law felt my ankles for pulse, and said it seemed stronger in left ankle, maybe circulation wasn t good in right ankle. I no longer have medical insurance , so it s hard to afford seeing a dr. Thankyou.