Saw this as a kid:
[1]
https://www.youtube.com/watch?v=PPcXMg3E9KQ
and gained a fascination ever since with prosthetic devices,
especially when they improve human performance In 1998, I bought
"Kangoo jumps" when they first came out. Paid extra shipping to
get them from Australia as they weren't available in the USA
yet, but I belonged to a "Branding" mailing list where people
shared new brand ideas for import/export for their countries.
One of the 1st ppl in the US to have 'em and I'd run super fast
up and down the street.
It was like prosthetic feet. I still have them; but 17 years
later, the plastic broke a few years back.
But point is: Prosthetic arm or prosthetic shoes, I don't see
much difference.
References
Visible links
1.
https://www.youtube.com/watch?v=PPcXMg3E9KQ