Brittle Bones

This article is about Brittle Bones, similar in appearance to Compound Fracture.

Brittle Bones is an unlockable passive item added in The Binding of Isaac: Afterbirth †.

Effects[]

Grants 6 empty Bone Hearts.
Removes all Red Heart containers. Does not remove existing Bone Hearts, but does empty them.
Upon losing a Bone Heart, including ones acquired from other sources, Isaac fires a ring of 8 bones that split into more bones and permanently gains a +0.5 tears up.
- Each bone does twice Isaac's damage plus a flat 22 damage; split bones do half this amount.

Picking this item up as The Lost or Keeper will give a one-time +0.5 tears up ( +0.4). This bonus is retained even if the item is later lost or rerolled.
- Keeper will also gain 24 Blue Flies.
The tears up bonuses gained through this item will persist in the escape sequence of Mines II.
Losing Bone Hearts through a Devil Deal will not give the tears up effect.
If Brittle Bones is removed (such as with Tainted Isaac), existing tear upgrades will not be removed.
- Genesis will remove the tear upgrades upon use.

Brittle Bones has been added in Booster Pack #5, after the initial release of the DLC.
"Everything hurts" may be a reference to Melting from Nuclear Throne.