A morphological and morphometric analysis of the facets and the retroarticular groove of Atlas vertebra
Keywords:
retro articular groove, retro articular canal, articular facetsAbstract
Introduction: An insight into the variable features of the atlas vertebra is indespensible to perform an array of spinal surgeries.This study is designed with the intent to ascertain a secure loci for these interventions. Aim and Objective: 1. To ascertain the incidence of retroarticular groove or canals 2. To determine the dimensions of the superior and inferior articular facets. 3.To observe the morphological differences in the shape of the facets. Materials and Methods: A cross sectional study on 116 adult atlas bones.The Morphometric measurements of the atlas were performed with a vernier caliper .The greatest anterior-posterior (AP) & transverse (T) diameter of Superior & inferior articular facets on both the sides will be measured and the morphometric data thus obtained was statistically analyzed by SPSS software version 23 using a paired t test. Observation and Results:The shape of the superior facets were mostly reniform (36.2%) on the left and dumb-bell shaped (34.4 %) on the right . Complete separation was seen in 5.1% (Right) and 3.4% (left) . No difference in the dimensions of the superior and inferior articular facets of either sides was noted.
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