The field of 3D printed prosthetic hands and arms is developing at a very rapid pace. It seems as though it was just yesterday that we saw the first 3D printed hands come about. Now one company, called OpenBionics has created a 3D printed prosthetic hand which costs less than $200 and can execute 144 different grasps. It is a myoelectric robotic device that is completely open source. Read and see more about this at: http://3dprint.com/51904/openbionics-prosthetic-hand/