Semantics

    The good doctor, not mine, announces that the term "knee replacement" is not accurate.  The knee is not replaced, he says.  You don't take the old knee out and put in a new one.  Rather, the surgery should be properly called a "knee resurfacing."  All that is done is to shave off a wafer-thin section of the bones, the femur and the tibia, and replace those sections with the metal and plastic components.  Oh, that sounds so much better.