"Yep. That's about the long and the short of it." Sans helpfully pointed to his radius and phalanges respectively on long and short. He holds his arm up after the fact, as if inviting her to poke around those bits as well.

Aside from the lack of tendons, muscle, and cartilage holding him together, his bones bore remarkable similarities to human ones. That is, aside from the differences Furiosa has already astutely noted.

"We call 'em baby bones, though. Baby bones grow up into skeletons." For a moment, Sans looks almost nostalgic. "I'd show you some of Pap's baby pictures, but I don't got 'em on me at the moment."