The splint seems to be set, at the very least. The arm's break doesn't seem to be clean though, and upon taking a closer look, it seems like his arm was gripped and crushed, rather than even being twisted.

"Akira-- Spades was the one that prepared the splint for me. He did very well, at least from my perspective. Though admittedly my understanding of injuries such as these are limited..."

Ah yes, injuries like these are a rather notable rarity back in his world. No one would want a deep, serious pain like breaking an arm and the inconvenience it would bring.