It's kinda hard to tell. It's possible since he had to have returned to the village at some point to get Sakura pregnant. But it's also possible he felt he shouldn't take the arm idk.
Kishi loves leaving his audiences with ambiguous endings.
I think he purposely didn't show Sasuke's other arm to leave it for us to "think about it".
Of course, until Naruto: The Last comes out.