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Singh A, Irugu DVK, Kumar R, et al. Study of morphologic variability of incudostapedial angle and its relation with temporal bone pneumatization. J Otol. 2019;15(2):50-53doi: 10.1016/j.joto.2019.09.004.
Singh, A., Irugu, D. V. K., Kumar, R., Verma, H., Gupta, A., & Kumari, A. (2020). Study of morphologic variability of incudostapedial angle and its relation with temporal bone pneumatization. Journal of otology, 15(2), 50-53. https://doi.org/10.1016/j.joto.2019.09.004
Singh, Anup, et al. "Study of morphologic variability of incudostapedial angle and its relation with temporal bone pneumatization." Journal of otology vol. 15,2 (2020): 50-53. doi: https://doi.org/10.1016/j.joto.2019.09.004
Singh A, Irugu DVK, Kumar R, Verma H, Gupta A, Kumari A. Study of morphologic variability of incudostapedial angle and its relation with temporal bone pneumatization. J Otol. 2020 Jun;15(2):50-53. doi: 10.1016/j.joto.2019.09.004. Epub 2019 Sep 24. PMID: 32440265; PMCID: PMC7231975.
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J Otol. 2020 Jun;15(2):50-53. doi: 10.1016/j.joto.2019.09.004. Epub 2019 Sep 24.

Study of morphologic variability of incudostapedial angle and its relation with temporal bone pneumatization.

Journal of otology

Anup Singh, David Victor Kumar Irugu, Rajeev Kumar, Hitesh Verma, Anandita Gupta, Abha Kumari

Affiliations

  1. Department of Otorhinolaryngology and Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, 110029, India.
  2. Department of Otorhinolaryngology and Head and Neck Surgery, Army College of Medical Sciences, Base Hospital Delhi Cantonment, Kotwali Road, New Delhi, 110010, India.
  3. Department of Otorhinolaryngology, Command Hospital, Kolkata, 700027, India.

PMID: 32440265 PMCID: PMC7231975 DOI: 10.1016/j.joto.2019.09.004

Abstract

INTRODUCTION: Optimal sound transmission across the ossicular chain is dependent on the appropriate alignment of the middle ear ossicles. Incudostapedial joint (ISJ) is conventionally considered to be at right angle.

OBJECTIVE: We intended to study the ISJ anatomy and the impact of temporal bone pneumatization on the same.

METHODS: In a cadaveric study comprising of 47 human temporal bones, canal wall down mastoidectomy was carried out under microscopic guidance keeping the ossicular chain intact. The morphology of ISJ was recorded and analysed with respect to the pneumatization status of the temporal bone. The data analysis was performed using statistical software Stata version 12.0.

RESULTS: The mean ISJ angle for the 47 bones was 90.5

CONCLUSION: The ISJ angle shows considerable variations. This variability needs to be taken into account when undertaking middle ear reconstructive procedures, specifically the ones involving the stapes footplate. The mastoid pneumatization does not appear to have an impact on the ISJ angle.

© 2019 PLA General Hospital Department of Otolaryngology Head and Neck Surgery. Production and hosting by Elsevier (Singapore) Pte Ltd.

Keywords: Anatomic variation; Ear ossicles; Human; Stapes surgery

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