Adamantium Skeleton

Adamantium Skeleton is a Fallout 3 Perk.

With the Adamantium Skeleton perk, your limbs only receive 50% of the damage they normally would.

Trivia
This perk pays homage to Marvel Comics superhero Wolverine and his Adamantium-laced skeleton. Bethesda previously made a less obvious reference to Marvel's indestructible fictional metal with the Adamantium Armor found in The Elder Scrolls III: Morrowind Tribunal expansion pack.