I found this image on medicine net.com site. It's not my knee, but it does show a torn medial meniscus, and the tear is somewhat near where mine is.
Pain sucks. Surgery sucks. Pain after surgery sucks. Last year it was my shoulder, this year my knee. Oh, well -- things could be a lot worse. The guy says I'll be able to resume all activities within a month. I don't believe him, but I do believe I'll be able to run at some point.