Fig. 5From: Development of a 4D hand gripping aid using a knitted shape memory alloy and evaluation of finger-bending angles in elderly womenSide-view of the knitted shape memory alloy module and method for angle measurement. a Stitch composition of plain knitted pattern, b measurement points, unactuated state, and c measurement points, actuated state (α: the external bending angle of the second joint connected to the first joint, and β: the external bending angle of the first joint)Back to article page