A<unk>  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. If the force of the impact is excessive, the bone may<unk>  at or near the site of the impact and cause damage to the underlying structures within the skull such as the membranes, blood vessels, and brain. While an uncomplicated<unk>  can occur without associated physical or neurological damage and is in itself usually not clinically significant, a<unk>  in healthy bone indicates that a substantial amount of force has been applied and increases the possibility of associated injury. Any significant blow to the head results in a concussion, with or without loss of consciousness. A<unk>  in conjunction with an overlying laceration that tears the epidermis and the meninges, or runs through the paranasal sinuses and the middle ear structures, bringing the outside environment into contact with the cranial cavity is called a compound<unk> . Compound<unk> s can either be clean or contaminated. There are four major types of<unk> s: linear, depressed, diastatic, and basilar. Linear<unk> s are the most common, and usually require no intervention for the<unk>  itself. Depressed<unk> s are usually comminuted, with broken portions of bone displaced inward—and may require surgical intervention to repair underlying tissue damage. Diastatic<unk> s widen the sutures of the skull and usually affect children under three. Basilar<unk> s are in the bones at the base of the skull.
Skull fracture
Basilar skull fracture
Le Fort fracture of skull
Mandibular fracture
Nasal fracture
Cervical fracture
Zygoma fracture
Subgaleal hemorrhage