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Prevalence of Cochlear-Facial Dehiscence in a Study of 1,020 Temporal Bone Specimens. | LitMetric

Prevalence of Cochlear-Facial Dehiscence in a Study of 1,020 Temporal Bone Specimens.

Otol Neurotol

*Department of Otolaryngology-Head and Neck Surgery, Albert Einstein College of Medicine, Bronx, New York †Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey ‡Department of Otolaryngology-Head and Neck Surgery, University of Connecticut School of Medicine, Farmington, Connecticut §Department of Statistics and Biostatistics, Rutgers University, Piscataway, New Jersey ||Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland.

Published: August 2016

AI Article Synopsis

Article Abstract

Objective: To determine the prevalence of cochlear-facial dehiscence (CFD) and to examine the influence of otic capsule area, age, sex, and race on CFD.

Study Design: Descriptive study of archived temporal bone specimens.

Materials And Methods: Targeted sections from 1,020 temporal bone specimens were scanned and examined for CFD. Cochlear-facial partition width (CFPW) and otic capsule area (OCA), a marker of bone thickness, were measured using image analysis software. Demographic data were analyzed using multiple linear regression analysis.

Results: The mean CFPW was 0.23 mm (range, 0-0.92 mm; SD, 0.15 mm). Six patients were completely dehiscent (0.59%). Fallopian canal width, age, sex, race, and OCA were found to be significant predictors of CFPW. Age was found to be negatively correlated with CFPW (β = -0.001) (p < 0.005). Thicker CFPW was associated with males (β = 0.024) and non-Caucasian individuals (β = 0.031). The mean OCA for dehiscent specimens (mean, 9.48 mm; range, 6.65-11.58 mm; SD 3.21 mm) was significantly smaller than the mean OCA for nondehiscent specimens, (mean, 12.88 mm; range, 6.63-21.92 mm; SD, 2.47 mm) (p < 0.01).

Conclusion: CFD occurred in nearly 0.6% of specimens in this temporal bone collection. Close to 35% of patients were sufficiently thin (<0.1 mm) to appear dehiscent on computed tomography scanning. Smaller OCA correlated with thinner CFPW, suggesting a developmental factor. Older, female, and Caucasian patients may have a greater risk for CFD and its associated symptoms.

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Source
http://dx.doi.org/10.1097/MAO.0000000000001057DOI Listing

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