title: Association Between Tegmen Tympani Status and Superior Semicircular Canal Pattern.
abstract: OBJECTIVE
  Detecting and quantifying the possible association between tegmen tympani (TT) status and superior semicircular canal (SSC) pattern.
  
  
  METHODS
  Observational study.
  
  
  METHODS
  Study conducted in three tertiary Spanish hospitals.
  
  
  METHODS
  Nonselected consecutive patients of all ages (607 temporal bones).
  
  
  METHODS
  Thin-section multidetector row computed axial tomography (CAT scan) of the temporal bones.
  
  
  METHODS
  Thickness of SSC bone coverture adjacent to the middle fossa, and TT status as a dichotomous variable: dehiscence (TTD) or integrity (TTI).
  
  
  RESULTS
  The observed SSC patterns were dehiscence (3.79%), papyraceous or thin (11.20%), normal (76.77%), thick (4.94%), and pneumatized (3.29%). The observed TT statuses were TTD (10.87%) and TTI (89.13%). TTD was associated with SSCD and papyraceous patterns, and TTI percentages were higher in normal and thick patterns (χ2 = 11.102; p = 0.001). The TTD probability was estimated as a function of SSC pattern and age by a multivariate binary logistics regression model (χ2 = 45.939; p < 0.001).
  
  
  CONCLUSIONS
  SSC pattern was significantly associated with TT status. Age influenced this association. The risk for TTD increased by 4.1% per each year of increasing age, did not differ significantly for normal and thick patterns, and increased 12 times and 20 times for papyraceous and SSCD patterns, respectively.
authors.affiliation: *Department of Human Anatomy and Histology, School of Medicine†Department of Anatomy, Embryology and Genetics, School of Veterinary, Universidad de Zaragoza‡Servicio de Otorrinolaringología, Hospital Universitario Miguel Servet, Paseo Isabel La Católica, Zaragoza§Department of Stomatology II, University of the Basque Country (UPV EHU), Barrio Sarriena, Leioa, Vizcaya||Department of Animal Pathology, School of Veterinary, Universidad de Zaragoza, Zaragoza¶Department of Otorhinolaryngology, Basurto University Hospital, University of the Basque Country (UPV/EHU), Avenida de Montevideo, Bilbao, Vizcaya, Spain.
authors.forename: Jaime
authors.initials: J
authors.lastname: Whyte
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Tejedor
authors.forename: Jesús José
authors.initials: JJ
authors.lastname: Fraile
authors.forename: Ana
authors.initials: A
authors.lastname: Cisneros
authors.forename: Rafael
authors.initials: R
authors.lastname: Crovetto
authors.forename: Luis Vicente
authors.initials: LV
authors.lastname: Monteagudo
authors.forename: Ana
authors.initials: A
authors.lastname: Whyte
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Crovetto
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D012665:Semicircular Canals / Q000000981:diagnostic imaging / Q000254:growth & development / Q000473:pathology*; D012737:Sex Factors; D013030:Spain; D013701:Temporal Bone / Q000000981:diagnostic imaging; D062606:Tertiary Care Centers; D014432:Tympanic Membrane / Q000000981:diagnostic imaging / Q000254:growth & development / Q000473:pathology*; D055815:Young Adult