Skull fracture
A break in the cranial bones from blunt force trauma.
A skull fracture is a break in one or more of the eight bones that form the cranial portion of the skull, usually occurring as a result of blunt force trauma. While an uncomplicated skull fracture can occur without associated physical or neurological damage, any significant blow to the head results in a concussion, with or without loss of consciousness. There are four major types: linear, depressed, diastatic, and basilar, each with distinct characteristics and clinical implications.
- type
- Medical condition
- common_cause
- Blunt force trauma
- major_types
- Linear, depressed, diastatic, basilar
- most_common_type
- Linear fracture
- associated_risk
- Concussion, hemorrhage, infection
Lore & Background
Skull fractures are classified by pattern and location. Linear fractures are the most common, usually straight with no bone displacement, and often require no intervention unless they involve sutures or vascular channels. Depressed fractures, occurring in 11% of severe head injuries, involve broken bones displaced inward and may require surgery to lift bones off the brain. Diastatic fractures widen the skull sutures, typically seen in children under three, but can occur in adults, especially at the lambdoidal suture. Basilar fractures, rare at only 4% of severe head injuries, occur at the skull base and have characteristic signs such as raccoon eyes and Battle's sign.
Reader's Guide
Skull fractures are clinically significant because they indicate substantial force and increase the possibility of associated injury to membranes, blood vessels, and brain. Compound fractures, where the outside environment contacts the cranial cavity, carry high risk of infection, especially with visible contamination or delayed treatment. Growing skull fractures are a rare complication in children under three, associated with a tear in the dura mater and rapid brain growth. Understanding fracture types guides treatment: linear fractures often need no intervention, while depressed and compound fractures may require surgical repair. The skull's variable thickness means impact force required for fracture depends on location, with thicker areas at the glabella and mastoid processes.
Did You Know?
- Linear skull fractures are the most common type and usually require no intervention for the fracture itself.
- Depressed skull fractures occur in 11% of severe head injuries and are usually comminuted with bones displaced inward.
- Basilar fractures have characteristic signs including raccoon eyes and Battle's sign.
- Growing skull fractures are a rare complication usually associated with linear fractures of the parietal bone in children under three.
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