An anatomical study of the inferior oblique muscle with emphasis on its nerve entry

Vishal Kumar, B. V. Murlimanju, P. Devika, Narga Nair, Shakuntala R. Pai, Thejodhar Pulakunta, N. S. Naveen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background: Anatomical studies regarding the inferior oblique muscle are scarce and the exact location of the entry of oculomotor nerve to the muscle has not been reported. In the present study, the objectives were to examine the exact location of the entry of oculomotor nerve to the inferior oblique muscle and to study the topographical anatomy of the muscle. Methods: The study included 56 intact orbits from 28 embalmed south Indian adult cadavers. The entire course of the nerve to the inferior oblique was exposed from both anterior and posterior aspects in all specimens. The exact location of the entry of nerve supplying the inferior oblique muscle was identified and the distances of the muscle from inferior and medial orbital margins were measured. Results: The oculomotor nerve entered the inferior oblique muscle through the orbital surface in 42 (75%) cases, through the ocular surface in 10 (17.9%) cases and through the posterior border in 4 (7.1%) cases. The distance of the muscle from the inferior orbital margin was 1 mm in majority (78.5%) of the cases. The distance of the muscle from the medial orbital margin was 11 mm in majority (42.8%) of the cases. Conclusion: The present study reports that the oculomotor nerve most often enters the inferior oblique muscle through its orbital surface. Detailed knowledge of the topographical anatomy of inferior oblique muscle and its site of nerve entry are essential for surgeons when performing ophthalmological surgery and regional anesthesia.

Original languageEnglish
Pages (from-to)293-297
Number of pages5
JournalChang Gung Medical Journal
Volume34
Issue number3
Publication statusPublished - 05-2011

Fingerprint

Oculomotor Muscles
Oculomotor Nerve
Muscles
Anatomy
Conduction Anesthesia
Orbit
Cadaver

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Kumar, V., Murlimanju, B. V., Devika, P., Nair, N., Pai, S. R., Pulakunta, T., & Naveen, N. S. (2011). An anatomical study of the inferior oblique muscle with emphasis on its nerve entry. Chang Gung Medical Journal, 34(3), 293-297.
Kumar, Vishal ; Murlimanju, B. V. ; Devika, P. ; Nair, Narga ; Pai, Shakuntala R. ; Pulakunta, Thejodhar ; Naveen, N. S. / An anatomical study of the inferior oblique muscle with emphasis on its nerve entry. In: Chang Gung Medical Journal. 2011 ; Vol. 34, No. 3. pp. 293-297.
@article{0769c0992aba4438b91e99cc2fc6aaf8,
title = "An anatomical study of the inferior oblique muscle with emphasis on its nerve entry",
abstract = "Background: Anatomical studies regarding the inferior oblique muscle are scarce and the exact location of the entry of oculomotor nerve to the muscle has not been reported. In the present study, the objectives were to examine the exact location of the entry of oculomotor nerve to the inferior oblique muscle and to study the topographical anatomy of the muscle. Methods: The study included 56 intact orbits from 28 embalmed south Indian adult cadavers. The entire course of the nerve to the inferior oblique was exposed from both anterior and posterior aspects in all specimens. The exact location of the entry of nerve supplying the inferior oblique muscle was identified and the distances of the muscle from inferior and medial orbital margins were measured. Results: The oculomotor nerve entered the inferior oblique muscle through the orbital surface in 42 (75{\%}) cases, through the ocular surface in 10 (17.9{\%}) cases and through the posterior border in 4 (7.1{\%}) cases. The distance of the muscle from the inferior orbital margin was 1 mm in majority (78.5{\%}) of the cases. The distance of the muscle from the medial orbital margin was 11 mm in majority (42.8{\%}) of the cases. Conclusion: The present study reports that the oculomotor nerve most often enters the inferior oblique muscle through its orbital surface. Detailed knowledge of the topographical anatomy of inferior oblique muscle and its site of nerve entry are essential for surgeons when performing ophthalmological surgery and regional anesthesia.",
author = "Vishal Kumar and Murlimanju, {B. V.} and P. Devika and Narga Nair and Pai, {Shakuntala R.} and Thejodhar Pulakunta and Naveen, {N. S.}",
year = "2011",
month = "5",
language = "English",
volume = "34",
pages = "293--297",
journal = "Chang Gung Medical Journal",
issn = "2072-0939",
publisher = "Chang Gung Medical Journal",
number = "3",

}

Kumar, V, Murlimanju, BV, Devika, P, Nair, N, Pai, SR, Pulakunta, T & Naveen, NS 2011, 'An anatomical study of the inferior oblique muscle with emphasis on its nerve entry', Chang Gung Medical Journal, vol. 34, no. 3, pp. 293-297.

An anatomical study of the inferior oblique muscle with emphasis on its nerve entry. / Kumar, Vishal; Murlimanju, B. V.; Devika, P.; Nair, Narga; Pai, Shakuntala R.; Pulakunta, Thejodhar; Naveen, N. S.

In: Chang Gung Medical Journal, Vol. 34, No. 3, 05.2011, p. 293-297.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An anatomical study of the inferior oblique muscle with emphasis on its nerve entry

AU - Kumar, Vishal

AU - Murlimanju, B. V.

AU - Devika, P.

AU - Nair, Narga

AU - Pai, Shakuntala R.

AU - Pulakunta, Thejodhar

AU - Naveen, N. S.

PY - 2011/5

Y1 - 2011/5

N2 - Background: Anatomical studies regarding the inferior oblique muscle are scarce and the exact location of the entry of oculomotor nerve to the muscle has not been reported. In the present study, the objectives were to examine the exact location of the entry of oculomotor nerve to the inferior oblique muscle and to study the topographical anatomy of the muscle. Methods: The study included 56 intact orbits from 28 embalmed south Indian adult cadavers. The entire course of the nerve to the inferior oblique was exposed from both anterior and posterior aspects in all specimens. The exact location of the entry of nerve supplying the inferior oblique muscle was identified and the distances of the muscle from inferior and medial orbital margins were measured. Results: The oculomotor nerve entered the inferior oblique muscle through the orbital surface in 42 (75%) cases, through the ocular surface in 10 (17.9%) cases and through the posterior border in 4 (7.1%) cases. The distance of the muscle from the inferior orbital margin was 1 mm in majority (78.5%) of the cases. The distance of the muscle from the medial orbital margin was 11 mm in majority (42.8%) of the cases. Conclusion: The present study reports that the oculomotor nerve most often enters the inferior oblique muscle through its orbital surface. Detailed knowledge of the topographical anatomy of inferior oblique muscle and its site of nerve entry are essential for surgeons when performing ophthalmological surgery and regional anesthesia.

AB - Background: Anatomical studies regarding the inferior oblique muscle are scarce and the exact location of the entry of oculomotor nerve to the muscle has not been reported. In the present study, the objectives were to examine the exact location of the entry of oculomotor nerve to the inferior oblique muscle and to study the topographical anatomy of the muscle. Methods: The study included 56 intact orbits from 28 embalmed south Indian adult cadavers. The entire course of the nerve to the inferior oblique was exposed from both anterior and posterior aspects in all specimens. The exact location of the entry of nerve supplying the inferior oblique muscle was identified and the distances of the muscle from inferior and medial orbital margins were measured. Results: The oculomotor nerve entered the inferior oblique muscle through the orbital surface in 42 (75%) cases, through the ocular surface in 10 (17.9%) cases and through the posterior border in 4 (7.1%) cases. The distance of the muscle from the inferior orbital margin was 1 mm in majority (78.5%) of the cases. The distance of the muscle from the medial orbital margin was 11 mm in majority (42.8%) of the cases. Conclusion: The present study reports that the oculomotor nerve most often enters the inferior oblique muscle through its orbital surface. Detailed knowledge of the topographical anatomy of inferior oblique muscle and its site of nerve entry are essential for surgeons when performing ophthalmological surgery and regional anesthesia.

UR - http://www.scopus.com/inward/record.url?scp=79959950473&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79959950473&partnerID=8YFLogxK

M3 - Article

C2 - 21733359

AN - SCOPUS:79959950473

VL - 34

SP - 293

EP - 297

JO - Chang Gung Medical Journal

JF - Chang Gung Medical Journal

SN - 2072-0939

IS - 3

ER -