Don't know what I did, but my right knee hurts (just above the knee). Not noticeable most of the time, but when I hyperextend it, it's not very comfortable. Stepping in a hole is bad. The gaunt and discomfort level are both getting worse, as of 7/15. (What the hell did I mean by "gaunt".)
Went easy on it, did a bunch of icing, it got better gradually.