As promised here is a video of Madeleine walking with her 'test' helper leg. Must admit that it is not the best picture or video of me (never mind my gigantic-still-nursing-twins breasts!) but we are proud enough of our little girl that I can tolerate some embarrassment.
Note that Max ran back into the exam room only to be herded by Greg (the prosthetist) back to the hallway. So much for stealing thunder.