Background and Purpose: Stapes surgery for otosclerosis can be challenging if access to the oval window niche is restricted. The aim of this study was to determine the accuracy of the computed tomographic (CT) scan in the evaluation of anatomical distances, and to analyze its reliability in predicting surgical technical difficulties. Material and Methods: A total of 96 patients (101 ears) were enrolled in a prospective study between 2012 and May 2015. During surgery, we evaluated the distance D1 between the stapes and the facial nerve, distance D2 between the promontory and the facial nerve after ablation of the superstructure, and the intraoperative discomfort of the surgeon. On preoperative CT scans, we measured the width and depth of the oval window niche, and the angle formed by two axes starting from the center-point of the footplate, the first tangential to the superior wall of the promontory, and the second tangential to the inferior wall of the fallopian canal. Results: Intraoperative distances D1 and D2 were correlated with the width of the oval window and with the facial-promontory angle measured on imaging. CT scan measurements of the facial-promontory angle and width of the oval window were associated with the degree of discomfort of the surgeon. The cut-off threshold for intraoperative subjective discomfort was computed as 1.1 mm for the width of the oval window niche, with a sensibility of 71% and a specificity of 84%. Conclusion: Preoperative imaging analysis of the oval window width and the facialpromontory angle can predict operative difficulty in otosclerosis surgery.
http://ift.tt/2rHBg4z
Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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- Diagnostic performance of 18fluorodesoxyglucose po...
- Can the Ni classification of vessels predict neopl...
- Social media presence of otolaryngology journals: ...
- What drives productivity loss in chronic rhinosinu...
- Diagnostic performance of 18fluorodesoxyglucose po...
- Can the Ni classification of vessels predict neopl...
- Social media presence of otolaryngology journals: ...
- What drives productivity loss in chronic rhinosinu...
- Switchable and pH responsive porous surfaces based...
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- Influence of core joints in sandwich composites un...
- Compressive properties of functionally graded latt...
- Intermittent compressive stress regulates Notch ta...
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- The role of the systemic inflammatory response in ...
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- Interaction of Immunoglobulin with Cytomegalovirus...
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- Editorial Board
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- Perioperative Management of Adult Patients With Ex...
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