Symptoms of knee replacement rejection?

Knee replacements cannot really be rejected: they are not transplanted organs but implanted hardware. The two prevalent things that can happen are that it works itself loose or that it gets infected, or both. Symptoms of this are increased aching, possibly swelling and sometimes fever if there's an infection. See your orthopedic surgeon if in doubt.
Asking not your doctor, but "medical experts" on Yahoo is the symptom of person stupid.

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