Be concerned about that tight band feeling in that it's telling you that you may be pushing yourself a bit too hard. But don't be concerned that it's never going away. It will .... with time. Lots of time. It can take months or even a year to be fully recovered from a TKR. It's important to listen to your knee and not push through any pain or tightness. You can't "work it out." Only time (and reduced inflammation and swelling) get rid of it. Remember that you can still have internal swelling even if things look fine on the outside.
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