Not sure we agree this is the best direction. Imaging how much shoulder stability will be necessary. As least with the Axillary/rib cage crutch placement people can splint their arms and torso into a more stable tripod. The load is shared between the arm-shoulder and the torso. The thorax is taken out of the equation with this new design and that means 100% of the stability must come from the scap-thoracic and glenohumeral intervals. And, most people will not have the endurance stability capacity in those joints either. Sure, it has some great design principles, but we do not things all the variables have been taken into account. We see more shoulder problems coming out of this kind of crutch design. We feel pretty strongly about this. What do you guys think ?