We then cover the implant with our proven medpor biomaterial to minimize sharp edges even if the plate requires modification.
Ct scan orbital floor plate.
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.
Orbital floor fracture repair might be indicated in this setting for small or medium sized defects.
Materials such as silicone and pmma have been in use for over 30 years and are radiopaque fig 11.
A coronal ct scan of a left maxillary mucocele eroding through the orbital floor and medial antral wall.
Ct scanning of the orbits is very quick which significantly reduces motion artifacts.
Appropriate timing is based on the clinical exam and imaging.
This is typically caused by a direct blow to the central orbit from a fist or ball.
Orbital blowout fractures occur when there is a fracture of one of the walls of orbit but the orbital rim remains intact.
We use ct scan data to design the titantium implants to approximate the anatomy of the orbital floor and medial wall.
Silicone implants are 440 hu whereas in one study pmma implants were 135 hu 24.
Coronal slice of a ct scan shows a non affected left orbit with normal anatomy of the transition zone.
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.
The following discussion assumes a volume ct technique using a multidetector scanner when referring to ct.
The matrixmidface preformed orbital plates are designed from ct scan data.
Epidemiology the blowout fracture is t.
Large fracture 50 of orbital floor on ct scan indicates that enophthalmos is likely to occur.
Universal 1 2 upper face module laser etched to aid in plate identification plate holding forcep plate holding forceps utilizes two pins to stabilize plate.
3d orbital floor inlay designed to hold small and large left and right 3d orbital floor plates sits beneath standard inlay within the small.
Computed tomography ct is the primary modality for assessing orbital soft tissue and bony injury in the emergency setting.
Concomitant medial orbital wall fracture can increase risk of progressive enophthalmos.
The arrow indicates the buttress of the transition zone between medial orbital wall and orbital floor.
