I have been working on this prosthetic for quite some time and I do not have access to the simulation with the student version. Long story short as to why I am doing this is that in todays current prosthetic market there is no prosthetic that allows knee disarticulation amputees to have the same axis of rotation of the knee as the sound leg. In everyday walking this is not a big concern but when trying to cycle or use row machines this difference in centerlines makes it difficult. Hope this helps to explain what I am trying to accomplish. Some additional help in design wouldnt hurt either.