Indian Journal of Forensic Medicine & Toxicology

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Variations in Length of Facial Nerve in the Segments of Temporal Bone of Male Cadavers in South Indian Region


Affiliations
1 S.S. Institute of Medical Sciences and Research Centre Davangere, India
2 Deptt. Dr. V.M. Govt. Medical College SOLAPUR - 413003, India
     

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In the present study facial nerve was dissected in 25 male temporal bones. The length of facial nerve in different segments of temporal bone was measured. In petrosal segment the mean length of facial nerve was 7.82 mm ± 0.27(SD=1.32). In labyrinthine segment mean length was 3.4mm ± 0.9(SD=0.45). In tympanic segment mean length was 12.13mm ± 0.7(SD=0.35). In mastoid segment it was 12.24mm ± 0.38(SD=1.90). The mean length of nerve to stapedius was 15.71mm ± 0.13 (SD=0.63) and mean length of chordatympani nerve was 19.01mm ± 0.17(SD=0.82). (These both nerves had measured from geniculate ganglia). The present values varied with previous workers in some segments and agreed in some segments of temporal bone. Hence these values had regional or racial significance could be due to biological variation or outcome of hybridized race but important for clinician, radiologist and mainly for Otosurgoen to anticipate the position of facial nerve to avoid its injury.

Keywords

Petrous, Tympanic, Labyrinthine, Mastoid, Otosurgery
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  • Dutta AK, Facial nerve. Essential of human anatomy 1989, vol.III 1st edition III, 308-315 current Books International Publication

  • Weit.R.J, Iatrogenic facial paralysis. otolaryngol. clin. north. Am. 1982, 15(4), 773-780.

  • Decker. GA, Lee MC Gregor’s synopsis of surgical anatomy 1986, XIIth edition. 176,184, 363-368. John Wright and Sons Ltd. Techno house Redcliffe way Bristol publication

  • Romanes G.J, Cunningham’s Manual of practical Anatomy Vol.IIIrd. Head Neck and Brain 2002 (18th edition). ELBS and Oxford University press publication.

  • Yadhav. SP, Ranga A, Sirohiwal BL, Chanda R – Intra-temporal facial nerve Indian journal of Otolaryngology and Head and Neck Surgeon 2006. 58(1), 27-30.

  • Nager. G.T, Protractor B. Facial canal normal anatomy, variation and anamolies Ann. Otol. Rhinol. larangeal Suppl. 1982 97, 45-61.

  • Nicoleta Maru, Cheija AC, Mogoante C.A, Prejuoi anu B. Intra temporal course of facial nerve morphological, topographical and morphometic features. Roman Journal of Morphology and embryology 2010 51(2), 243-248.

  • Waheed E Saad M. Kamal I, Yousuf I, Fatwaz EJENT “Egyptian Journal of Ear Nose, Throat and Allied Sciences 2009, 10, 18-21.

  • Boenac R.L, Navaretle ML. Morpho metric study of mastoid segment of facial nerve. Acta Otorrinolarangal. ESP 2007, 58 (5), 178-181.

  • Kharat R.D. Golhar and Pati Cy - Study of intra temporal course of facial nerve and its variations 25 bones dissection. Indian Journal of Otolaryngology and Head and Neck Surgery 2009, 64 39-42.

  • Boemo R.L, Navarret ML, Lareas etal. Anatomical relationship between the position of sigmoid sinus, tympanic membrane and diagastric, ridge with mastoid segment of the facial nerve Ur. Arch Otorhinolaryngology 2008 265, 389-392.

  • Ernest Frazer J, Development of temporal bone. Anatomy of human skeleton 1933, IIIrd edition, 212-217. A Churchill, 40 Gloucester place Portman square London publication.

  • Larcen W J, Human embryology. Innervation of developing limb bud and arches 4th edition. Churchill living stone, Philadelphia 1993; 640-643

  • Santa luca. AP, A re-examination of presumed Neanderthals-like fossils. Journal of Human evolution 1979, 7, 619–636.

  • Raghavan P, Invasion of Aryans presumption expert chitlee. K Sethi: Tribunae news service. http://www.tribunaeindia.com/2004-1103/ chd.html. Sci Law. 2004 Apr; 44(2): 160.


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  • Variations in Length of Facial Nerve in the Segments of Temporal Bone of Male Cadavers in South Indian Region

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Authors

U. K. Makandar
S.S. Institute of Medical Sciences and Research Centre Davangere, India
P. R. Kulkarni
Deptt. Dr. V.M. Govt. Medical College SOLAPUR - 413003, India

Abstract


In the present study facial nerve was dissected in 25 male temporal bones. The length of facial nerve in different segments of temporal bone was measured. In petrosal segment the mean length of facial nerve was 7.82 mm ± 0.27(SD=1.32). In labyrinthine segment mean length was 3.4mm ± 0.9(SD=0.45). In tympanic segment mean length was 12.13mm ± 0.7(SD=0.35). In mastoid segment it was 12.24mm ± 0.38(SD=1.90). The mean length of nerve to stapedius was 15.71mm ± 0.13 (SD=0.63) and mean length of chordatympani nerve was 19.01mm ± 0.17(SD=0.82). (These both nerves had measured from geniculate ganglia). The present values varied with previous workers in some segments and agreed in some segments of temporal bone. Hence these values had regional or racial significance could be due to biological variation or outcome of hybridized race but important for clinician, radiologist and mainly for Otosurgoen to anticipate the position of facial nerve to avoid its injury.

Keywords


Petrous, Tympanic, Labyrinthine, Mastoid, Otosurgery

References