It looks to me like that the leg shown without a knee cop is supposed to be a view
of the _back_ of the knee. Notice on the back leg of figure on the right, you can
make out that it is the back of the knee pretty easily. See the "U" shaped gap at
the rear and top of the greave on the figure on the right? It looks almost
identical to the "U" shaped gap on the back leg of the figure on the left. As for
why his foot it turned the wrong way if that is the back of his leg, look at the
same figure's left hand and try to figure out how he makes his _fingers_ bend
backwards like that. <img src="http://www.thearma.org/forum/images/icons/smile.gif" alt="" /> It seems the artist has a little trouble with perspective.
Something to kind of keep in mind when trying to figure out stuff from early
artworks is that a mathematical theory of perspective in art didn't really
start to emerge in europe until early in the 15th century. A lot of artists
at the time drew in a way that wasn't exact, as they were still makeing a
transition from drawing "flat" to trying to draw things as we actually see
them. It is a compleatly different style of art, and I think you could
make some pretty big mistakes trying to get information from it if you
are assumeing you are looking at badly drawn perspective art instead
of well drawn "flat" art.
Some good examples of both are at:
http://www.crs4.it/Ars/arshtml/renart1.html
Thanks,
David
"A sword never kills anybody; it is a tool in the killer's hand." Lucius Annaeus Seneca 4BC-65AD.