Feet

Slightly less than two hours to draw these. All of these skeletal-muscular structures are drawn from examples given in "Atlas of Human Anatomy for the Artist" by Stephen Rogers Peck. Excellent book to study from!
The skeletal work for both the hands and feet took most of my time (about 1 hour and fifteen minutes each) It seems easier to me to render the muscles. Less empty space maybe. Getting the proportions correct for bone (and making it look right!) can be quite time consuming.