MORPHOMETRIC ANALYSIS OF TYPICAL CERVICAL VERTEBRAE AND THEIR CLINICAL IMPLICATIONS: A CROSS SECTIONAL STUDY Ephraim Vikram Rao .  K * 1 , B Sadananda Rao 2 , B H Shiny Vinila 3 . *1 Assistant Professor, Department of Anatomy, Deccan College of Medical Sciences, Hyderabad, Telangana, India. 2 Associate Professor, Department of Anatomy, Kamineni Academy of Medical Sciences and Research Center, Hyderabad, Telangana, India. 3 Senior lecturer, Department of Anatomy, Panineeya Mahavidyalaya Institute of Dental Sciences and Research Center, Hyderabad, Telangana, India . Correspondence   Address:    Dr.   Ephraim   Vikram   Rao.   K ,    Assistant   Professor,   Department   of   Anatomy,   Deccan   College   Of      Medical   Sciences,Santhosh   Nagar, Hyderabad, 500058. , Telangana, India. Ph. No.: +919949353025 E-Mail:  dr.ephraimvikram@gmail.com ABSTRACT: Introduction:   Knowledge   on   the   dimensions   of   morphological   features   of   typical   cervical   vertebrae   is   of   importance   to   improve   the   surgical   outcome   while performing    cervical    pedicle    screw    insertion,    cervical    laminectomy,    hook    plating,    lateral    mass    screw    fixation,    inter    spinous    wiring    and    the    cervical transpedicular   screw   fixation.   The   aim   of   the   present   study   on   the   morphometric   analysis   of   the   typical   cervical   vertebrae   (C3-C6)   is   to   provide   knowledge for the surgeons to improve the surgical techniques and to minimize the post operative complications. Materials   and   Methods:    The   present   study   consisting   of   50   dry   typical   cervical   vertebrae.   Height,   transverse   diameter,   antero-posterior   diameter   of vertebral   bodies,   height   and   length   of   laminae,   length   and   width   of   pedicles,   length   of   spine,   length   and   width   of   superior   and   inferior   articular   facets   were measured using digital Vernier caliper with 0.01mm precision. Results:   The   mean   and   standard   deviations   of   height,   transverse   diameter,   antero-posterior   diameter   of   vertebral   bodies   were   12.31±1.58   mm,   21.49±2.13 mm   and   15.69±1.42   mm   respectively.   The   mean   &   SD   of   the   height   and   length   of   laminae   were   10.60±1.21   mm   and   15.13±1.38   mm   respectively.      The mean   &   SD   of   length   and   width   of   pedicles   were   5.62±1.53   mm   and   4.64±0.72   mm   respectively.   The   mean   &   SD   of   length   of   spines   were   16.23±2.23mm. The   mean   &   SD   of   length   and   width   of   superior   and   inferior   articular   facets   were   12.75±2.47mm,   9.69±1.54   mm,   13.55±2.16   mm   and   6.37±0.82   mm respectively .       The   mean   antero-posterior   diameter   of   bodies   was   measured   on   superior   and   inferior   surfaces   and   it   was   found   that   the   mean   antero- posterior   diameters   on   inferior   surface   of   bodies   were   higher   than   superior   surface .    Student   t   test   was   performed   between   the   right   and   left   sides   of   all   the parameters and found bilateral symmetry. Conclusion:   The   knowledge   on   the   morphometric   dimensions   of   the   typical   cervical   vertebrae   (C3-C6)   provides   essential   guidance   to   the   surgeons   to improve the surgical techniques which can minimize the intra operative and/or post operative complications. 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