I took a Human Anthropology course at Duke (this would have been 14yrs ago too) and we went over this specific item as part of our study of the human knee. Especially how the generally wider hips of women create a greater angle from the hip down to the knee and therefore greater torgue on the knee itself and a resultant increase in acl/mcl injuries by female athletes vs male athletes. The article obviously covers this in much better detail.
I recommend people do a little research on the human knee, just wiki it. I find it amazing that we don't see more injuries considering how the knee is constructed and all the torque and pressures it sees. From what I recall (not a medical opinion here), the knee is essentially held together by the 2-4 ligaments and that's it. There is no ball and socket like the hip or a bunch of muscles like the shoulder.