Prosthetics Progress

Working on our affordable limb project for 128, I'm designing an above-the-knee (trans-femoral) prosthesis for a child in Colombia. Were currently in initial prototyping stages, and I'm finding it challenging to create a stable testing rig that locks an able-bodied leg into a static position and evenly distributes the load so that one can walk on a prosthetic knee and lower-leg. Updates to follow, with pictures.