Innovative Journal Journal of Medical Biomedical and Applied Sciences 2277:4939 10 05 To Study The Correlation Between Foramen Magnum Index And Cranial Index In Indian Population 1 Mumal Nagwani M.B.B.S., M.D. Associate Professor, Department of Anatomy, Maharshi Vashisht Autonomous State Medical College, Basti, Uttar Pradesh, India. Geetanjali Srivastava M.B.B.S., M.D. Assistant Professor, Department of Anatomy, Era’s Lucknow Medical College & Hospital, Lucknow, Uttar Pradesh, India Archana Rani M.B.B.S., M.S. Professor, Department of Anatomy, King George’s Medical University, Lucknow, Uttar Pradesh, India Journal Article https://doi.org/10.15520/ijmhs.v10i03.289 Abstract Purpose: The cranium base is complex, as well as extremely attractive. The foramen magnum is an important characteristic of cranium base. A transcondylar surgical method requires knowledge of the anatomical features of this region. Foramen magnum index and cranial index were evaluated to establish a correlation, if any, between the dimensions of skull and foramen magnum and an attempt was made to provide a baseline data for better surgical approach in this region so that overall morbidity and mortality could be minimized. Material and Methods: Various diameters of foramen magnum and of cranium were examined to calculate the two index using an electronic digital sliding caliper in 120 adult North Indian dry skulls of unknown age and gender. Results: The mean Foramen Magnum Index (FMI) was 78.71±5.94. The mean cranial index was found to be 73.82±7.06.The p-value is >0.05, r = 0.004 (Weak correlation) indicating a weak correlation between two parameters. Conclusion: The results primarily help the anatomists and a medico-legal expert to find out the cranial index from the Foramen Magnum Index through the provision of base line data. Secondly, it provides an important information to clinicians and neurosurgeons to approach the cranial base with maximum safety and minimal mortality and morbidity. Oladipo, GS, Paul, CW, Anthropometric Comparison Of Cephalic Indices Between The Urhobo And Itsekiri Ethnic Groups Of Nigeria, Global Journal of Pure and Applied Sciences, 2009, 15, 1, 65, 67, 1118-0579, 10.4314/gjpas.v15i1.44895, African Journals Online (AJOL), https://dx.doi.org/10.4314/gjpas.v15i1.44895 Natsis, K., Piagkou, M., Skotsimara, G., Piagkos, G., Skandalakis, P., A morphometric anatomical and comparative study of the foramen magnum region in a Greek population, Surgical and Radiologic Anatomy, 2013, 35, 10, 925, 934, 0930-1038, 1279-8517, 10.1007/s00276-013-1119-z, Springer Science and Business Media LLC, https://dx.doi.org/10.1007/s00276-013-1119-z Babu, Ramesh P., Sekhar, Laligam N., Wright, Donald C., Extreme lateral transcondylar approach: technical improvements and lessons learned, Journal of Neurosurgery, 1994, 81, 1, 49, 59, 0022-3085, 10.3171/jns.1994.81.1.0049, Journal of Neurosurgery Publishing Group (JNSPG), https://dx.doi.org/10.3171/jns.1994.81.1.0049 Jk Berge, R A, Bergmann, Variation in size and in symmetry of the foramina of the human skull, Anat Clin, 2001, 14, 406, 413 Janeczek, M., Chrószcz, A., Czerski, A., Morphological Investigations of the Occipital Area in Adult American Staffordshire Terriers, Anatomia, Histologia, Embryologia, 2011, 40, 4, 278, 282, 0340-2096, 10.1111/j.1439-0264.2011.01071.x, Wiley, https://dx.doi.org/10.1111/j.1439-0264.2011.01071.x Adejuwon, S A, Salawu, O T, Eke, C C, Odaibo, A B, , Akinlosotu W F, A Craniometric Study of Adult Humans Skulls from South western Nigeria, The Asian Medical Journal, 2011, 3, 23, 25 Ka Murshed, Morphometric evaluation of the foramen magnum and variations in its shape: A Study on Computerized Tomographic Images of Normal Adults, Surg. Radiol Anat, 2003, 35, 925, 934 Shukla, A P, A study of cranial capacity and cranial index of Indian skull, Indian Journal of Anatomy, 1966, 15, 31, 35 Bharati, S., Som, S., Bharati, P., Vasulu, T.S., Climate and head form in India, American Journal of Human Biology, 2001, 13, 5, 626, 634, 1042-0533, 1520-6300, 10.1002/ajhb.1101, Wiley, https://dx.doi.org/10.1002/ajhb.1101 Raveendranath, V, Manjunath, K Y, An anthropometric study of correlation between cephalic index, cranial volume and cranial measurements in indian cadavers, Anatomica Karnataka, 2005, 1, 9, 13 Adebisi, S S, Sex identification from the Skull of Hausa / Fulani northern Nigeria, Annal:. Afric. Med, 2003, 2, 22, 26 Rp Chaturvedi, & Nk, Harneja, A Craniometric Study of Human Skull, Journal of Indian Antomical Society, 1963, 12, 93, 96 Ds Howale, Bathija, A, Gupta, S, Bp Pandit, Correlation between cranial index and foramen magnum index in dried human skulls, Glob J Anal res, 2014, 3, 3, 6 Gruber, P, Variability of human foramen magnum size the anatomical record, 292, 1713, 1729