Orbital Floor Fracture

The buckling theory of the formation of an orbital floor fracture.

Orbital floor fracture. Etiology fractures of the orbital floor are common. Getting hit with a baseball or a fist often causes a orbital blowout fracture. Orbital blowout fracture or indirect orbital floor fracture. A blowout fracture of the orbital floor is defined as a fracture of the orbital floor in which the inferior orbital rim is intact.

A the dorsal view of the inferior wall of the right orbit the main mechanisms of blow out fracturing of the orbital floor are wavelike deformations shown with dashed lines that are transmitted from the intraorbital rim to the orbital floor b c a horizontal impact i 1 causes less significant deformation d 1 compared. The floor is likely to collapse because the bones of the roof and lateral walls are robust. Orbital floor fractures may result when a blunt object which is of equal or greater diameter than the orbital aperture strikes the eye. Orbital floor fractures may result when a blunt object which is of equal or greater diameter than the orbital aperture strikes the eye or on the cheek 1.

Depending on the location and mechanism intracranial thoracic and abdominal injuries may be associated. The floor of the eye socket ruptures or cracks resulting in a small hole in the eye socket s floor which can trap some parts of the eye muscles and its surrounding structures. It is estimated that about 10 of all facial fractures are isolated orbital wall fractures the majority of these being the orbital floor and that 30 40 of all facial fractures involve the orbit. The globe usually does not rupture and the resultant force is transmitted throughout the orbit causing a fracture of the orbital floor.

In elderly people these breaks may result from a fall that causes their cheek to hit a piece of furniture or other hard surface. This is when a blow or trauma to the orbital rim pushes the bones back causing the bones of the eye socket floor buckle to downward. Orbital floor fracture also known as blowout fracture of the orbit eye socket. Ophthalmologists most often get involved in pure orbital fractures with an intact orbital rim and without other facial bone fracture.

This fracture can also affect the muscles and nerves around the eye keeping it from moving properly and feeling normal. Orbital floor fracture a blow to the rim of the eye socket pushes the bones back which causes the bones of the orbit floor to buckle downward. This is a fracture of the paper thin floor of the eye socket with the bony rim surrounding the eye remaining intact. Orbital fractures commonly occurby blunt periocular trauma.