title: Role of inferior orbital wall morphologic properties in isolated orbital blow-out fracture.
abstract: OBJECTIVE
  To compare inferior orbital wall morphology between isolated inferior and medial orbital wall fracture patients.
  
  
  METHODS
  The morphologic properties of patients with isolated blow-out fractures involving the medial wall or inferior wall treated from August 2004 to August 2009 were reviewed. The cross-sectional area, thickness, gradient, and curvature of the inferior wall were measured via orbital CT in the opposite non-traumatized eye.
  
  
  RESULTS
  Patients with isolated inferior wall fractures (n = 77) and isolated medial wall fractures (n = 78) evidenced no differences in sex, age, etiology of trauma, laterality of trauma, and associated concomitant intraocular injuries. The cross-sectional area, thickness, and gradient of the inferior wall did not differ significantly between the 2 groups. However, the coefficient of curvature was significantly greater in patients with inferior wall fracture than in patients with medial wall fracture (0.016 ± 0.006 vs. 0.006 ± 0.002, respectively; p = 0.000).
  
  
  CONCLUSIONS
  Patients with more convex and steep inferior walls are more likely to incur isolated inferior wall fractures than isolated medial wall fractures.
authors.affiliation: Department of Ophthalmology, CHA University, Bundang CHA Medical Center, Seongnam, Korea.
authors.forename: Jong-Seo
authors.initials: JS
authors.lastname: Park
authors.forename: Helen
authors.initials: H
authors.lastname: Lew
authors.forename: Sang-Yeul
authors.initials: SY
authors.lastname: Lee
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000473:pathology; D009915:Orbit / Q000000981:diagnostic imaging / Q000473:pathology*; D009917:Orbital Fractures / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D015050:Zygoma / Q000473:pathology