This reminds me of Paul Wittgenstein (brother of philospher Ludwig)[1]. He was a concert pianist who lost his right arm in WWI and the commissioned a bunch of piano music playable with only the left hand, including works by still-famous names like Ravel and Prokofiev. My personal favorite is Korngold's [2].

More recently, there is Leon Flescher, who was a highly-renowned pianist until he lost the use of his right hand in the 60s. Amazingly, he got it back 40 years later and has enjoyed recent success again as a two-handed pianist.

[1] https://en.wikipedia.org/wiki/Paul_Wittgenstein [2] https://www.youtube.com/watch?v=bGulyl8bzgQ