Board Thread:Naruto Discussions/@comment-25498052-20141004162612/@comment-25294339-20141108212214

Thanks for the URL advice.

And regarding the Susanoo, it was only a matter of proficiency and experience upon the ability of stabilizing the Susanoo's chakra, as Madara did without the Rinnegan, meaning Sasuke would be able to perfect his Susanoo, just by the means of tampering with it evolving his use without the Rinnegan. And the stabilization of the chakra leads to a solid entity, which by no means dictates Amaterasu useless. In fact, this means that there won't be raw chakra to deflect Amaterasu, akin to what Naruto did.

I'm pretty confident Sasuke can alter his flames to not affect him, like how he can hold and touch the flames, and in your case, how his ribcage wouldn't be melted by it.