Ct Scan Orbital Floor Plate

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Ct scan orbital floor plate. Concomitant medial orbital wall fracture can increase risk of progressive enophthalmos. We use ct scan data to design the titantium implants to approximate the anatomy of the orbital floor and medial wall. Orbital blowout fractures occur when there is a fracture of one of the walls of orbit but the orbital rim remains intact. This is typically caused by a direct blow to the central orbit from a fist or ball.

Orbital implants have a variable appearance at ct depending on their composition. 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. Silicone implants are 440 hu whereas in one study pmma implants were 135 hu 24.

Materials such as silicone and pmma have been in use for over 30 years and are radiopaque fig 11. Ct scanning of the orbits is very quick which significantly reduces motion artifacts. Computed tomography ct is the primary modality for assessing orbital soft tissue and bony injury in the emergency setting. 3d orbital floor inlay designed to hold small and large left and right 3d orbital floor plates sits beneath standard inlay within the small.

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. 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. The arrow indicates the buttress of the transition zone between medial orbital wall and orbital floor. Large fracture 50 of orbital floor on ct scan indicates that enophthalmos is likely to occur.

Appropriate timing is based on the clinical exam and imaging. We then cover the implant with our proven medpor biomaterial to minimize sharp edges even if the plate requires modification. Orbital floor fracture repair might be indicated in this setting for small or medium sized defects. Coronal slice of a postoperative ct scan taken after transconjunctival repair of the complete left medial orbital wall and orbital floor.

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.