Anatomical Measurement of the Sinus Tympani

Saito, Ryusuke; Igarashi, Makoto; Alford, Bobby R.; Guilford, Frederick R.

doi:10.1001/archotol.1971.00770070664006

Cited by 32 publications

(13 citation statements)

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“…7 In Saito's study it was 2.93 mm (range 0.61-5.87 mm). 8 Ozturan reported a mean depth of 2.06 mm (0.2 -9.9 mm). 3 The findings in our study regarding depth are not in agreement with the above studies.…”

Section: Discussionmentioning

confidence: 99%

Dimensions and morphology of the sinus tympani: an anatomical study

Kumar

Venugopal

Parashuram

et al. 2018

Int J Otorhinolaryngol Head Neck Surg

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Background: The sinus tympani is a deep pocket of varying dimensions and shape situated in the retrotympanum. The sinus tympani lies medial to the facial nerve. Hence surgical access is difficult. This area is frequently involved in chronic otitis media attico antral type. Removal of disease from this area is difficult leading to cholesteatoma recidivism. The anatomy has been well described in literature. Its dimensions and morphology has not been described in the Indian population. Knowledge of the endoscopic anatomy of this area will help to eradicate disease leading to better results.Methods: A canal wall down mastoidectomy was performed on twenty wet temporal bones. A zero degree endoscope was introduced into the middle ear to view the sinus tympani. Using a graduated millimetre scale. The dimensions and morphology of the sinus tympani was studied. Results: Twenty wet bones were dissected. The mean height of the sinus tympani was 3.55 mm. The mean width was 2.22 mm and mean depth was 1.72 mm. The morphology was as follows: 13 bones had a type A morphology (classical type), 6 had a type B morphology (confluent), 1 bone had a type D morphology (restricted type). We did not encounter a type C sinus tympani in our study.Conclusions: The morphology and dimensions of the sinus tympani are variable. The otologist must have a complete knowledge of the anatomy of this area to successfully eradicate disease from this area.

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Section: Discussionmentioning

confidence: 99%

Dimensions and morphology of the sinus tympani: an anatomical study

Kumar

Venugopal

Parashuram

et al. 2018

Int J Otorhinolaryngol Head Neck Surg

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“…It extends posteriorly, medial to the facial nerve. The degree of posterior extension is highly variable and may be related to the overall status of pneumatization of the involved temporal bone 1 …”

mentioning

confidence: 99%

Sinus Tympani Endoscopic Anatomy

Baki¹,

Dine²,

Saiid³

et al. 2002

Otolaryngol.--head neck surg.

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“…Furthermore, there are cases in which the depth of the ST extends more than 3 or 4 mm posterior to the anterior edge of the FN (2% of cases). 2,[11][12][13] In these cases, total removal of the disease from the ST cannot be assured by conventional techniques. 5,10 Hence, posterior access to the ST has been proposed as an alternative approach.…”

Section: Discussionmentioning

confidence: 99%

“…2,10,11 To access the ST posterior from the mastoid, it is necessary to dissect the compact bone at the area located in a triangle formed by the FN, LSCC, and PSCC (Figs 2, 4). Saito et al 12 described this area as a heavy bone zone, formed by the otic capsule, usually existed between the ST and retrofacial cells. Nevertheless, this might be a difficult and even hazardous task for an inexperienced otologic surgeon because 3 important structures, namely the FN, LSCC, and PSCC, are vulnerable to surgical injury during dissections.…”

Section: Discussionmentioning

confidence: 99%