title: C-arm-guided reduction of zygomatic fractures revisited.
abstract: BACKGROUND
  Anatomic reduction of the zygomatic arch, a key surgical landmark for midfacial width and projection, is essential for the treatment of combined fractures of the zygomaticomaxillary complex and zygomatic arch. Reduction control in surgery for this common facial fracture would be facilitated by intraoperative real-time assessment using widely available and reliable equipment. Although C-arm fluoroscopy is routinely used in the repair of orthopedic fractures, its use in the maxillofacial region, particularly for combined zygomatic fractures, has been scarcely reported.
  
  
  METHODS
  We prospectively evaluated C-arm-guided reduction in 38 patients of combined zygomatic fracture without concurrent craniofacial fractures. Patients were classified according to the presence or absence of bone contact in the displaced zygomatic arch, namely as conserved (C) and loss (L) types, respectively. Reduction status was determined by the degree of recovery of the malar prominence and arch shape.
  
  
  RESULTS
  In all cases, C-arm imaging clearly displayed the displaced zygomatic arch and body in a single image. Cumulative fluoroscopic time was a few minutes in all cases. Total reduction status was excellent in 21 patients and good in 17. No case was classified as fair or poor. Repair was significantly more favorable in type C than in type L cases (p = 0.0016).
  
  
  CONCLUSIONS
  In combined zygomatic fractures, the C-arm technique provides easy, flexible, and time-efficient adjustment. Its comprehensive imaging for zygomatic arch shape and body contour markedly facilitates the control of fracture reduction and protects against unexpected, unsatisfactory outcomes.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Saiseikai Senri Hospital, Suita, Osaka, Japan. hsc12@hotmail.com
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Imai
authors.forename: Masahiro
authors.initials: M
authors.lastname: Michizawa
authors.forename: Gentaro
authors.initials: G
authors.lastname: Fujita
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Shimizu
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Ota
authors.forename: Tetsuhisa
authors.initials: T
authors.lastname: Kitamura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ichiyanagi
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Kai
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005471:Fluoroscopy / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015641:Radiography, Interventional / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D015050:Zygoma / Q000000981:diagnostic imaging / Q000601:surgery; D015051:Zygomatic Fractures / Q000000981:diagnostic imaging* / Q000601:surgery*