This is David Aguilar, he was born with Poland Syndrome which is a condition that affects the chest muscles, causing them to under develop at birth. Blockage of blood vessels in the womb can lead to this and other conditions such as Brachydactyly.

David had an interest as a child for Lego which lead to his development of his prosthetic arm. He used Lego Technic to create his model the ‘MK-1’ (iron man reference) which involved motors and his adaptation of fine motor movement with fingers and pressure sensors.
David is still evolving his prosthesis and creating new updated models using cables to contract to simulate muscle contraction. There is a book, documentary and many more articles about Davids story, including his youtube ‘Hand Solo’.
As a Lego employee myself it is amazing to see the extent to which Lego can go and not only be a bit of fun for kids. It is amazing how life changing it really is and the possibilities there are with it.
I believe Lego technic could be explored more in the world of prosthesis not only for function but to help introduce the topics to children to allow them to explore the world of STEM and possibly aid children who have conditions where prosthesis are an option, Lego may make this seem less daunting and allow them to explore this whilst having fun.
Ria Hill