Recently i set up a Returning MTB soldier, he had lost his lower leg with an IED incident. We used a interesting retro fit use his down tube water bottle bosses, used longer allens and fixed under the water bottle cage a altered bar end rewelded for the mounting brackets. The bar ends had a deep inward curve...it allowed him to actually completely rest his right amputee stump to hold it steady in the downtube alteration. It was like watching a bullet zip off with new magic. he took to it like he had ridden all his life. It was a very cool project and made the engineering awesome. I enjoy reading the posts of alterations and adjustments to accomdate the varous groups.
keep up the Great work