This 2-year-old girl has a condition called arthrogryposis which causes her not to be able to move her arms. But with a little help, her muscles can be strengthened to achieve more normal use of her limbs. This is not the first time that an exoskeleton has been used, but the advent of 3D printed parts makes the skeleton work much better.
Previous exoskeletons were made of metal and were quite heavy. When you’re talking about a 25 pound child every extra ounce counts. Moving to plastic parts lightened the load. Now the structure can be mounted on her torso, using rubber bands to aid her movement until her muscles are strong enough to do it on their own.
Of course to [Emma] this isn’t an exoskeleton. It’s her set of magic arms.