UA-22728437-71


NJBMS - Volume 3, Issue 2, October - December 2012

Pages: 103-108

A STUDY ON OSSIFIED PTERYGOSPINOUS AND PTERYGOALAR LIGAMENTS IN INDIAN SKULLS

Author: DEVI JANSIRANI D, MUGUNTHAN N, ANBALAGAN J, SUDHA RAO, SHIVADEEP S

Category: Anatomy

[Download PDF]

Abstract:

Pterygospinous and pterygoalar ligaments are the intrinsic ligaments present in the sphenoid bone, which may get ossified occasionally. The aim of this study is to observe the incidence and detailed anatomy of ossified pterygospinous and pterygoalar ligaments in Indian skulls. A total of 204 skulls from various Medical and Dental Colleges of Puducherry and Chennai were studied. Pterygospinous ligament ossified completely in 2 skulls (0.98%) and incompletely in 22 skulls (10.78%). Pterygoalar ligament ossified completely in 5 skulls (2.45%) and incompletely in 8 skulls (3.92%). The length of complete pterygospinous bar was 9-11 mm and its width measured 2-3 mm. The length of complete pterygoalar bar measured 3-9 mm and its width was 2-5 mm. The mean vertical and horizontal diameter of the pterygospinous foramen was 7.5 x 7.0 mm respectively and that of pterygoalar foramen was 3.2 x 2.7 mm respectively. Pterygospinous bar was observed most commonly medial to foramen ovale and pterygoalar bar was most commonly found to traverse across the foramen ovale. Thereby, the mandibular nerve emerging out through foramen ovale and its branches can be compressed by these bars and lead to trigeminal neuralgia. These bars hinder the surgical approaches to the base of the skull. Their presence reduces the success rate in trigeminal ganglion block by trans-ovale approach. Therefore, knowledge about these bony bridges is essential for physicians, anesthetists, radiologists, dentists, oral and maxillofacial surgeons.

Keywords: : Pterygospinous bar, pterygoalar bar, ossified ligaments of sphenoid, mandibular nerve entrapment.

No. of online users: 54

Search Articles



Visitor Counter

World wide visitors

News

Editor in Chief of NJBMS Dr.Deepti Shastri, Professor and Head, Department of Anatomy, Academic Co-ordinator for Pre and Paraclinical Sciences, VMKV Medical College & Hospital, Salem.


Indexed in

Index Copernicus (MCI recognized indexing body) ICV - 75.97, Scientific Indexing Services, Research Bib, Indian Science Publication, Eurasian Scientific Journal Index, Science Library Index, International Innovative Journal Impact Factor, Cite Factor, International Impact Factor Service,

Publication Statistics

Articles Statistics

Advertisements

Society for Basic Medical Sciences
NJBMS Journal - Indexed in Index Copernicus

Manuscript Statistics

Subscribe for TOC Alerts

Get the table of contents of current issues.

E-mail Alerts