Variations of Mastoid Foramen in North Indian Population
Variations of Mastoid Foramen in North Indian Population
Keywords:
absent mastoid foramen, exsutural mastoid foramen, sutural mastoid foramenAbstract
Background: Non metric cranial variants have always been a topic of considerable interest for research workers, as they possess racial, regional and sex dimorphic differences. These variants are also of anthropometric, genetic, morphological and forensic importance. Material and Methods: 71 skulls from north indian region were studied to analyse the prevalence of variations in number and location of mastoid foramen and to draw significant inferences. Results: Prevalence of absent mastoid foramen is 5.19%, while bilateral prevalence of absent mastoid foramen is only 1.29%, however unilaterally mastoid foramen is absent in 3.9%. Prevalence of single, double, triple and quadruple mastoid foramina was 75.97%, 19.48%, 1.95% and 2.6% respectively. Amongst all mastoid foramina in 71 skulls, 23.38% foramina were exsutural, out of which 20.13% were present on temporal bone and 3.25% were present on occipital bone. Conclusions: Findings are discussed and compared with other global studies and are found to be of considerable racial and regional significance. Knowledge of this variant can be valuable in some neurosurgical procedures. [Debbarma S NJIRM 2014; 5(6):49-52
References
2. Berry AC, Berry RJ. Epigenetic variation in human cranium. J Anat. 1967; 101: 361-380
3. Shaik HS, Shepur MP, Desai SD, Thomas ST, Maavishettar GF, Haseena S. Study of mastoid canals and grooves in south indian skulls. Indian Journal of Medicine and Healthcare. 2012; 1(1) :32-33
4. Kaur J, Choudhry R, Raheja, S, Dhissa NC. Non metric traits of the skull and their role in anthropological studies. J. Morphol. Sci. 2012; 29(4): 189-194
5. Kim WS, Kim SI, Kim S, Zheng GD, Yang EJ, Han SR. “Mastoid Foramen and Superficial Mastoid Canals of Korean Men. Korean J Phys Anthropol. 2000 Mar;13(1):11-19
6. Turgut HB, Anil A, Peker T, Pelin C, Sevim A The incidence and localization of mastoid foramen and superficial parietomastoid canal and their relations with each other. Anatomical Science International 1998; 73(3): 223-231
7. El Kettani C, Badaoui R, Fikri M, Jeanjean P, Montpellier D, Tchaoussov J. Pulmonary edema after venous air embolism during craniotomy. Eur. J. Anaesthesiol. 2002; 19:846-848
8. Reis C, Deshmukh V, Zabramski JM, Crusius M, Desmuskh P, Spetzler RE, Preul MC. Anatomy of the mastoid emissary vein and venous system of the posterior neck region: neurosurgical implications. Neurosurg.2007; 61:193-201
