Binding of Isaac: Rebirth Wiki

(in Afterbirth † and Repentance)
This article is about Compound Fracture, similar in appearance to Brittle Bones.

Compound Fracture is an unlockable passive item added in The Binding of Isaac: Afterbirth †.

Effects[ | ]

  • Tears turn into bones, which shatter into 1-3 shards upon hitting an obstacle or enemy, which each deal 50% of Isaac's Damage.
    • Unlike Collectible The Parasite iconThe Parasite, there is no damage minimum on splitting, but the tears can also split only once.
    • The shards have a fixed size, about the same as a 3.5 damage tear, regardless of their Damage.
  • +1.5 Range.
  • (except in Repentance) +1.0 Tear Falling Speed.

Synergies[ | ]

  • Collectible Bob's Rotten Head iconBob's Rotten Head: The bomb will break into 1-3 more bombs which are launched in random directions from the point of impact.
  • (in Repentance)Collectible C Section iconC Section: Fetuses are skeletons that shoot splitting bone fragments when in contact with an enemy.
  • Collectible Cricket's Body iconCricket's Body/Collectible The Parasite iconThe Parasite: Each tear splits into more tears, which will all shatter.
  • Collectible Haemolacria iconHaemolacria: Tears will sometimes burst into smaller tears when hitting obstacles or enemies. These smaller tears are miniature versions of Haemolacria tears, which will burst when hitting the ground.
  • Collectible Ipecac iconIpecac: If the bone tear hits a wall or an obstacle, it will split into explosive half-damage shards. Hits on enemies and the floor behave as normal Ipecac.
  • Collectible The Ludovico Technique iconThe Ludovico Technique: Tear turns into a spinning bone that rapidly spews out smaller bone shots on contact with enemies.
  • Collectible Kidney Stone iconKidney Stone: First bullet shatters into smaller kidney stone bullets
  • Spectral tears: Bones pass through obstacles and generate shards for each obstacle they pass through, which can result in many shards being generated from a single bone.
  • Collectible Technology Zero iconTechnology Zero: The bone fragments will be connected by the electric current.

Interactions[ | ]

  • Collectible Anti-Gravity iconAnti-Gravity: Bone tears will hover until released but bone shards will travel normally.
  • Collectible Brimstone iconBrimstone: Overrides Compound Fracture.
  • Collectible Dr. Fetus iconDr. Fetus: Overrides Compound Fracture.
  • Collectible Epic Fetus iconEpic Fetus: Overrides Compound Fracture.
  • Collectible Flat Stone iconFlat Stone: Bone tears will bounce when they are fired, however, bone shards will not bounce when they travel.
  • Character The Forgotten iconThe Forgotten: Smaller bone shots appear whenever an enemy is hit with the melee attack. (except in Repentance) The bone toss is unaffected.
    • (in Repentance) Bone toss attack also creates bone tears.
  • Collectible Lachryphagy iconLachryphagy: Bone tears can be fed and will burst into split tears. Bone tears will burst into bone shards when hitting obstacles or enemies which can also be fed and burst into split tears and bone shards yet again. When bone shards are fed, they turn back into bone tears which can repeat this process again and again.
  • (except in Repentance)Collectible Mom's Knife iconMom's Knife: Overrides Compound Fracture.
    • (in Repentance) Knife will occasionally spawn bone fragments.
  • (except in Repentance)Collectible Rubber Cement iconRubber Cement: Tears turn to bones, but bones do not shatter.
    • (in Repentance) Tears hitting enemies will both shatter and bounce simultaneously.
  • Collectible Technology iconTechnology/Collectible Tech X iconTech X: Overrides Compound Fracture.
  • Collectible Technology 2 iconTechnology 2: The laser is not affected, but bone tears still shoot from Isaac's left eye.
  • Collectible Tractor Beam iconTractor Beam: Bone tears will not burst into bone shards when fired at obstacles, however, bone tears will burst into bone shards when fired at enemies.
  • Collectible Trisagion iconTrisagion: Beams will only burst when hitting obstacles.

In-game Footage[ | ]

Trivia[ | ]

  • The item is a reference to a compound fracture, a medical condition where a bone breaks and is exposed through the skin.