Computed Tomography Characterization of Traumatic Orbital Floor and Wall Defects
Problem: Lack of searchable literature existing regarding size, location, degree of orbital wall and floor traumatic defects. Purpose: In this retrospective study, maxillofacial computed tomography studies were evaluated in patients with isolated orbital floor and or medial wall fractures to characterize the resulting traumatic defect
Patients and Methods: A chart review was performed at a Level 1 Trauma hospital where a search query was implemented for all patients with a diagnostic code during their admission for orbital floor or orbital wall fracture. 398 patients were identified and following exclusion criteria 118 patient’s CT scans were examined. 37 patients with medial orbital wall fractures and 81 patients with orbital floor fractures were measured for fracture area, distance from orbital rim, volume of displacement, and displacement of extraocular muscles.
Results: In process and currently being reevaluated for statistical analysis but will include fracture area, displacement volume, Location from inferior orbital rim or anterior lacrimal process
Conclusions relevant to problem: This will be an epidemiologic report on the average orbital floor/wall traumatic defect size presenting to a level one trauma center. While there is a plethora of literature available regarding post traumatic orbital defect reconstruction available, there seems to be a relative paucity of information detailing orbital floor and wall defects. This study will provide basic data on defects seen in one population. It is hoped that this data may be expanded upon and may help guide future discussion regarding the somewhat controversial indications for orbital floor reconstruction.
References
1Ploder O, Klug C, Voracek M, et al: Evaluation of computer based area and volme measurement from coronal computed tomography scans in isolated blowout fractures of the orbital floor. J Oral Maxillofacial Surgery 60: 1267, 2002.
2Schouman T, Couvoisier D S, et al: Can systematic computed tomographic scan assessment predict treatment decision in pure orbital floor blowout fractures? J Oral Maxillofac Surg . 70 1627, 2012