Orbital blowout fractures occur when there is a fracture of one of the walls of orbit but the orbital rim remains intact.
Ct scan orbital floor plate.
Orbital implants have a variable appearance at ct depending on their composition.
Plate borders medial wall orbital floor designed from ct scan data the three dimensional implants closely approximate the topographical anatomy of the hu man orbital floor and medial wall to provide accurate recon struction even after significant two wall fractures 5 6 preformed three dimensional shape.
Appropriate timing is based on the clinical exam and imaging.
Functional endoscopic sinus surgery was performed to drain the maxillary mucocele and 50 ml of thick yellow mucus was expressed which was sent to pathology.
Concomitant medial orbital wall fracture can increase risk of progressive enophthalmos.
A coronal ct scan of a left maxillary mucocele eroding through the orbital floor and medial antral wall.
Coronal slice of a postoperative ct scan taken after transconjunctival repair of the complete left medial orbital wall and orbital floor.
These plates consist of implants that closely approximate the topographical anatomy of the human orbital floor and medial wall and are intended for use in a selective craniomaxillofacial trauma.
Materials such as silicone and pmma have been in use for over 30 years and are radiopaque fig 11.
The arrow indicates the buttress of the transition zone between medial orbital wall and orbital floor.
This is typically caused by a direct blow to the central orbit from a fist or ball.
Ct scanning of the orbits is very quick which significantly reduces motion artifacts.
Large fracture 50 of orbital floor on ct scan indicates that enophthalmos is likely to occur.
Silicone implants are 440 hu whereas in one study pmma implants were 135 hu 24.
Computed tomography ct is the primary modality for assessing orbital soft tissue and bony injury in the emergency setting.
Coronal slice of a ct scan shows a non affected left orbit with normal anatomy of the transition zone.
We use ct scan data to design the titantium implants to approximate the anatomy of the orbital floor and medial wall.
Orbital floor fracture repair might be indicated in this setting for small or medium sized defects.
Epidemiology the blowout fracture is t.
The matrixmidface preformed orbital plates are designed from ct scan data.
The following discussion assumes a volume ct technique using a multidetector scanner when referring to ct.
