Variations in the Length of Facial Nerve in Temporal Bone of Male Cadavers of North Karnataka

  • Gazala Shaireen Assistant Professor, Department of Anatomy
  • Sarita Sylvia Associate Professor, Department of Anatomy
Keywords: Petrous, Labyrinthine, Mastoid, Tympanic, Tailors tape


Background: The variation in the length of facial nerve (FN) has surgical importance, during parotidectomy, maxillofacial, and otology surgeries.
Method: Fifty male cadaveric temporal bones were taken out by removing soft parts attached to it. The FN was exposed. The length of FN in different segments of temporal bone was measured by tailors tape (mm)
Results: Length of facial nerve 7.92 (SD ± 1.22) in petrous part, 3.5 (SD ± 0.42) in labyrinthine part, 12.14 (SD ± 0.38) tympanic part, 12.26 (SD ± 1.88) mastoid part, 15.78 (SD ± 0.52) nerve to stapedius, 19.08 (SD ± 0.68) chorda tympani branch.
Conclusion: This cadaveric study will be tool for maxillofacial, ENT, and neurosurgeon to access require surgical parts without injury to FN.

Author Biographies

Gazala Shaireen, Assistant Professor, Department of Anatomy

Khaja Banda Nawaz Institute of Medical Sciences

Sarita Sylvia, Associate Professor, Department of Anatomy

MR Medical College, Gulbarga, Karnataka, India


1. Davis RA, Anson BJ. Surgical anatomy of the facial and
parotid gland based upon a study of 350 cervico-facial
halves. Surg Gynaecol Obstet 1956;102:385-412.
2. Katz AD, Catalano P. The clinical of the various anastomotic
of facial nerve report of 100 patients. Arch Otolarangeal
Head Neck Surg 1987;113:959-62.
3. Kopuz C, Targut S. Distribution of facial nerve in parotid
gland: Analysis of 50 cases. Ocajimas Folio Anat Jpn 1994;70:
4. Larian B. Parotidectomy for benign parotid tumours
otolarang. Clin North Am 2016;49:395-413.
5. Yadhav SP, Ranga A. Intra temporal facial nerve. Indian J
Otolaryngol Head Neck Surg 2006;58:27-30.
6. Nager GT, Protractor B. Facial canal normal anatomy
variation and anomalies. Ann Otol Rhinol Laryngeal
Suppl 1982;97:45-61.
7. Makandar UK, Kulkarni PR. Variations in length of facial
Nerve in the segments of temporal bone of male cadavers
in South Indian Region. Ind J Forensic Med Toxicol 2012;6:
8. Frazer JE. Development of earnest bone. In: Anatomy of
Human Skeleton. 3rd ed., Vol. 40. Gloucester Place Port Man
Square: London Publication, Churchill; 1933. p. 212-7.
9. Larsen WJ. Human Embryology Innervations of Developing
Limb Bud and Arches. 4th ed. Philadelphia, PA: Churchill
Living Stone; 1993. p. 640-3.
10. Luca AP. A re-examination of presumed Neanderthals like
fossils. J Human Eval 1979;7:619-36.
11. Raghavan P, Sethi K. Invasion of Aryans Presumption Expert
Chitlee. Tribunae News Service; 2021. Available from: [Last
accessed on 2021 Feb 24].