Inferior Orbital Floor Fracture Radiology

Reformatted coronal ct of the facial bones demonstrates a fracture of the floor of the left orbit white arrow associated with orbital emphysema blue arrow.

Inferior orbital floor fracture radiology.

Orbital fat prolapses into the maxillary sinus and may be joined by prolapse of the inferior rectus muscle. The infraorbital canal is a site of weakness. Inferior blowout fractures are the most common. Hemorrhage partially fills the left maxillary sinus.

A blowout fracture of the orbital floor is defined as a fracture of the orbital floor in which the inferior orbital rim is intact. These type of fractures usually result from a direct blow to the orbit. The inferior orbital wall is most commonly affected by fracture 2 signs of orbital fracture typically include peri ortbital bruising and subconjunctival hemorrhage. Fractures of the medial and lateral orbital walls.

A portion of the inferior rectus muscle solid red arrow projects into the maxillary sinus below see normal opposite side broken red arrow. Inferior floor medial wall lamina papyracea superior roof lateral wall. Fractures of the orbital floor are common. Left orbital floor fracture is depressed by 3 5 millimeters.

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. Approximately 50 will be associated with medial orbital wall fracture. Blowout fracture of the orbit. Blowout fractures can occur through one or more of the orbital walls.

This computed tomography image shows encroachment on lateral rectus muscle secondary to the lateral wall fracture. No evidence of rectus muscle entrapment retrobulbar hemorrhage or proptosis. It joins medially with the pterygomaxillary fissure at a right angle. Left orbital floor fracture.

Bilateral frontal intraparenchymal hemorrhages.