IJAR.2019.170

Type of Article:  Original Research

Volume 7; Issue 2.2 (May 2019)

Page No.: 6571-6574

DOI: https://dx.doi.org/10.16965/ijar.2019.170

MORPHOMETRIC STUDY OF PHARYNGEAL ORIFICE OF AUDITORY TUBE IN SOUTH INDIAN POPULATION

Divya P 1, Sachin K S *2, Chaitra D 3, Martin LA 4.

1 Lecturer, Department of Anatomy, K S Hegde Medical Academy, Mangaluru, Karnataka, India India.

*2 Assistant Professor, Department of Anatomy, K S Hegde Medical Academy, Mangaluru, Karnataka, India.

3 Lecturer, Department of Anatomy, K S Hegde Medical Academy, Mangaluru, Karnataka, India.

4 Professor, Department of Anatomy, K S Hegde Medical Academy, Mangaluru, Karnataka, India.

Corresponding Author: Dr.Sachin K S, Assistant Professor, Department of Anatomy, K S Hegde Medical Academy, NITTE (Deemed To Be University), Mangaluru.          PIN – 575018. Karnataka, India. Tel No: +91-9611206205. E-Mail: drsachinks63@gmail.com

ABSTRACT:

Auditory tube extends from the anterior wall of middle ear to the lateral wall of the nasopharynx at the level of inferior turbinate. It plays an important role in maintaining the equilibrium of air. In the patients suffering from chronic otitis media, the auditory tube plays an very important landmark for the endoscopic evaluation and for transnasal approach to the infratemporal fossa. The present study was aimed to locate the pharyngeal orifice of the auditory tube in relation to the important anatomical landmarks. The study was carried out on 50 sagittal head and neck sections of formalin fixed cadavers. The pharyngeal opening of auditory tube was looked for its shape, size and position. The anatomical landmarks with reference to the pharyngeal opening of auditory tube taken were posterior end of inferior turbinate, perpendicular distance from the clivus, from the roof of nasopharynx, from the posterior end of hard palate and from the anterior arch of atlas. The distance from these anatomical landmarks to the pharyngeal orifice of auditory tube were measured using digital vernier calipers. The mean and standard deviations of the distances were calculated and tabulated. The measured distances were slightly higher on the right than the left side. These differences were not statistically significant. The present study is useful for otorhinolaryngologists to locate the position of pharyngeal opening of auditory tube endoscopically and evaluate patients with diseases of middle ear.

Key words: Auditory Tube, Nasopharynx, Hard Palate, Middle ear.

REFERENCES

  1. Standring S, Collins P, Crossman AR, Gatzoulis MA, Healy JC, et al. Gray’s Anatomy – The Anatomical Basis Of Clinical Practice. 40th Churchill Livingstone Elsevier ; 2008:564.
  2. Bluestone CD, Paradise JL, Beery QC. Physiology of the Eustachian tube in the pathogenesis and management of middle ear effusions. Laryngoscope 1972;82(9):1654-70.
  3. Mohite S, More RS, Mohite H. Morphmetric Study Of Pharyngeal Orifice Of Auditory Tube. Journal Of Evolution Of Medical And Dental Sciences. 2016;5(73):5385-5387.
  4. Koch KHH. Skeletal growth analysis five years after completion of primary treatment of children with a sailing palate vomer Malformation, Gieson, Germany: University of Gieson Thesis 1994.
  5. Koch HHH, Grzonka MA, Koch J. The pathology of the velopharyngeal musculature in cleft palates. Ann Anat 1999;181(1):123-6.
  6. Sham JS, WeiWI, Zong YS, Choy D, Guo YQ, Luo Y,et al. Detection of subclinical nasopharyngeal carcinoma by fibre optic endoscopy and multiple biopsy. Lancet 1990;7:371-374.
  7. Anne D Souza et al. Morphometric study of pharyngeal orifice of auditory tube and its clinical relevance. The experiment. 2013;16(3),1134-1137.
  8. Yanagiswa E, Joe JK. Endoscopic view of the torus tubaris. Ear Nose Throat Journal, 1999;78(6):404-6.
  9. Jose Evandro Andrade, Prudente de Aquino, Dorothy Eliza Zavaressi, Maria Rosa M. S. Carvalho, Julia Negro Prudente de Aquino. Endoscopic availation of Pharyngeal Orifice Of Eustachian tube in patients with Chronic Otitis Minim Invasive Neurosurg. 2010;53(5-6):2619.

Cite this article: Divya P, Sachin K S, Chaitra D, Martin LA. MORPHOMETRIC STUDY OF PHARYNGEAL ORIFICE OF AUDITORY TUBE IN SOUTH INDIAN POPULATION. Int J Anat Res 2019;7(2.2):6571-6574. DOI: 10.16965/ijar.2019.170