Every internet meme when it first gets popular is somewhat overused. I mean, how else does it get around? Nyan cat really started getting hot near the end of February last year, and well, even though it's still pretty popular, you can definitely see that a lot of people have quieted down about it now.
Skyrim was just released in November. The "arrow in the knee" thing begun spreading shortly after, but use has skyrocketed now--since the internet is so large, it takes a while for word of it to reach most of it. It's still a funny meme, though. Like, most memes just sort of... happen randomly one day, and it's up to us as the internet community to hepl it get around.
See, some memes stay within a community, as they are more of an inside joke, such as ZD's very own "RAER SELDAS" meme, but others spread because of the people. I've seen many failed attempts at trying to start a widespread meme, but since no one was willing to bring it across the internet, that these memes never caught on.
"Arrow to the knee" is just in its early stages of the life cycle of internet memes. xD Be patient with it... use will eventually die down a bit.