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Submitted: 26 January 2008
HERDIN Record #: PCHRD012608120117

Anterior cranial fossa landmarks:A study based on Filipino cadaver dissections.

Maria Karen A. Capuz

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Title:Anterior cranial fossa landmarks:A study based on Filipino cadaver dissections
Objectives:1.To measure fixed anatomic landmarks and structures in the anterior cranial fossa of adult Filipino cadavers, 2.To compare some measurements obtained in this study with published values from foreign literature. 3.To demonstrate the clinical importance and application of the measurements obtained in this study.
Design:Cross-sectional study involving dissections of 24 Filipino adult cadaver skulls
Setting:Tertiary government hospital pathology laboratory
Materials:24 adult Filipino cadavers with no gross deformities,craniofacial abnormalities and history of craniofacial trauma
Results:The average length of the anterior cranial fossa obtained in this study is 45.81mm which is not significant different from published caucasian value of 47.7mm.There is no significant difference between the means of both sexes.The mean length of the intracranial portion of the optic nerve is 12.97mm on the right and 12.89mm on the left which is significantly different from published caucasian value of 10mm.There is no significant difference in the mean length of the intracranial portion of the optic nerve between the right and left as well as between males and females.The diameter of the intracranial portion of the optic nerve has an average value of 5.59mm and 5.33mm on the right and left respectively which is not significantly different form published caucasian value of 4-7mm.There is no significant difference between the mean value on the right and left as well as between both sexes.The average distance between the right and left optic foramen is 13.53mm which is not significantly different between males and females.The angle of the optic chiasm as it bifurcates into the intracranial portion of the optic nerve has an average value of 76.42 degree,the mean values being significantly different between sexes,with the males having an average of 79.61 degree and females with 66.83 degree.The mean distance from the frontal crest to the anterior wall of the sphenoid sinus and optic chiasm is 44.08mm and 53.26mm respectively with no significant difference between the means of both sexes(p value=.01).
Conclusion:The mean values for the measurements of anterior cranial fossa structures were noted.Some of the average values obtained in this study are not significantly different from published foreign values except for the mean length of the intracranial portion of the optic nerve.There is no significant difference between the means obtained for both sexes except for the optic chiasm angle.Values derived from this investigation may guide the craniofacial surgeon as to the lateral and posterior most extent that surgery can be performed without jeopardizing intact vital structures such as the optic nerves and orbital contents.

Publication Type
Research Report
Date
November 30, 2003

Objectives

Objectives:1.To measure fixed anatomic landmarks and structures in the anterior cranial fossa of adult Filipino cadavers, 2.To compare some measurements obtained in this study with published values from foreign literature. 3.To demonstrate the clinical importance and application of the measurements obtained in this study.

LocationLocation CodeAvailable FormatAvailability
Manila Central University-Filemon D. Tanchoco Memorial Foundation 331 Abstract

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