Types of Skull Fractures and Foreign Body Detection Methods

Basal Fx

Fractures located at the base of the skull.

Blowout Fx

Fractures of the floor of the orbit.

Contre-Coup Fx

Fractures to one side of a structure caused by trauma to the other side.

Depressed Fx

Fractures that cause a portion of the skull to be depressed into the cranial cavity.

Le Fort Fx

Bilateral horizontal fractures of the maxillae.

Linear Fx

Irregular or jagged fractures of the skull.

Tripod Fx

Fractures of the zygomatic arch and orbital floor/rim with dislocation of the frontozygomatic suture.

Vogt-Bone-Free Position

This method is used for detecting small or low-density foreign particles located in the anterior segment of the eyeball/eyelids and involves taking two projections (lateral and superoinferior) with two movements each (vertical for lateral and horizontal for superoinferior).

Parallax Method

This method determines whether a foreign body is located within the eyeball and involves taking two lateral and two PA projections.

Sweet Method

This method determines the exact location of a foreign body using geometric calculations and involves a Sweet localizing device, Sweet film pedestal, and taking two lateral projections: one with CR perpendicular and one with CR 15-25° cephalad.

Pfeiffer-Comberg Method

This method uses a leaded contact lens placed directly over the cornea and utilizes a contact lens localization device and a pedestal-type film holder. The method involves taking two projections: one Waters method with CR horizontal and one lateral with CR perpendicular.