Vital Signs – Prosthetics
Prosthetics are fake body parts that replace broken or missing ones in humans or animals. They can be made out of different materials and have different types of technology to move or to sense. One of the most complex parts of a prosthesis is the joint—how can it be engineered at the right place and to bend the right way to help someone in daily life? Our bioengineers created their own prosthetic fingers using the ratio of one of their own fingers to scale it to size. But fingers have no muscles—they are powered with tendons connected to arm and wrist muscles. The joints work with tendons to bend the finger. The campers had to create two separate “tendons” in order for the fingers to be able to move.
Ask your camper: Which two tendons allow our fingers to move, and what movement is each tendon in charge of? Flexor, curls fingers. Extensor, straightens fingers