Nah naruto grew his back yang, sasuke has yin so he probably can just make an arm out of chakra. Think Susanoo but just the arm. Also have heard some ideas that balance the cool factor of Sasuke's arm. Like naruto has a chakra arm like the nine tails mode, or a puppet arm made by kankuro all sound cool.
I'm thinking that Naruto had a artificial arm made for him by those bridge builders(from part 1 that they had to escort), and they wanted to make one for Sasuke and he refused.