I was wondering if any of you on here have ever worn or tried making "knee stilts." I have no idea what to call them other than that. If you've ever seen the movie Moulin Rouge from 2001, John Leguizamo plays a man that is really short and he is wearing these "knee stilts" to shorten his height throughout the movie.

The image URL below links to a few shots of John in those stilts (note, the right upper photo is of a concept stilt, the two images on the left side are the real ones that were worn).
www.csh.rit.edu/~jlyon/tem..._stilts.jpg

Any thoughts on how to make these or where I could find some?