Checkout this article I found at PLOS: dx.plos.org/10.1371/jour...
Morphology and articular configuration of the ceratopsid (Dinosauria: Ornithischia) lower hindlimb as revealed by a specimen from the Upper Cretaceous Dinosaur Park Formation of southern Alberta, Cana...Ceratopsid dinosaurs, such as Triceratops, are well-known for the striking horns and frills that are ubiquitous among members of the clade. But their postcranium has received little attention by compa...dx.plos.org