Morphometry and CT measurements of useful bony landmarks of skull base

Ray, Biswabina and Rajagopal, KV and Rajesh, T and Gayathri, BMV and D’Souza, Antony Sylvan and Swarnashri, JV and Saxena, Alok (2011) Morphometry and CT measurements of useful bony landmarks of skull base. Romanian journal of morphology and embryology, 52 (3). pp. 873-877. ISSN 1220–0522

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OBJECTIVE:Aim of this study was to determine the distance between Henle's spine (HS) on the temporal bone to the clinically important bony landmarks on the dry skulls that will act as a guide in various surgical procedures on skull base. Distances from the head of malleus (HOM) to surgically relevant landmarks were also studied on CT images. MATERIALS AND METHODS:Thirty-nine adult preserved dry skulls were studied bilaterally. The parapetrosal triangle bounded by spinopterygoidal, bispinal and the midsagittal lines was identified. The location of the HS and its distance from the various important anatomical structures were measured. In addition, five CT images, where distances from the HOM to various anatomical landmarks were measured. RESULTS:The mean and range of distances from the HS to various important anatomical landmarks on the spinopterygoidal line, bispinal line and in the parapetrosal triangle were tabulated. The mean and range of CT-based measurements of distances from HOM to other anatomical landmarks were also noted. CONCLUSIONS:The knowledge of unvarying relationship of the HS and the HOM to the various structures of the skull would assume significance while planning surgeries around the temporal bone by guiding the direction and degree of bone removal. Statistical differences between the two genders showed significant difference only in the distance between the HS to the medial margin of the external orifice of carotid canal. Therefore, these landmarks can also be applied as references for various surgeries of middle cranial fossa, as well as transpetrosal and transmastoid approaches.

Item Type: Article
Uncontrolled Keywords: Henle's spine; spinopterygoidal line; bispinal line; parapetrosal triangle; head of malleus; CT scan.
Subjects: Medicine > KMC Manipal > Anatomy
Medicine > KMC Manipal > Radiology
Depositing User: KMC Manipal
Date Deposited: 03 Mar 2014 05:04
Last Modified: 17 Dec 2015 14:30

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