Nimble lost his wings in an accident as a little colt. The accident was in a fairly remote area of equestria and by the time he was able to get to a medical unicorn it was too late . He built prosthetic wings that he now wears as a badge of courage. With his new wings he can now have the sky again.


Nimble Hooves belongs to  nimblesquirrel
I did the artz
Prosthetics have been mentioned throughout history.
The earliest recorded mention is the warrior queen Vishpala in the Rigveda.
Flight first evolved approximately 410 million years ago.
The first eyeglasses were made in Italy at about 1286, according to a sermon delivered on February 23, 1306, by the Dominican friar Giordano da Pisa.