Morphometric analysis of the lateral masses of the sub-axial cervical spine in the indian population and its correlation with lateral mass screw placement
|IJOCP | Volume – 2015| Issue – 2015| Article ID – 2015:90
Conference: Indian Orthopaedic Association Annual Conference IOACON-2013, India [Click for Full details]
Authors: Bosco A, Uvaraj N
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Lateral mass screw fixation is a well-known and frequently used technique for stabilization and fusion of the cervical spine. The lateral masses of the subaxial cervical spine differ in anatomic dimensions from one another. These morphologic differences have implications for placing lateral mass screws safely and effectively. This morphometric analysis on computed tomography scans of the lateral masses of the sub-axial cervical spine in the Indian population, a first of its kind, has been performed to study the differences as compared to the western race and to analyze any modifications of the known surgical techniques.
A morphometric analysis of the lateral masses of the subaxial cervical spine was performed in 39 male and 21 female patients. Our study involved an extensive analysis of 600 lateral masses in 60 adult patients involving 4800 morphometric measurements involving around 7640 computed tomography films. All measurements were done on computed tomography films with resolution of 2mm or less. Morphometric analysis was performed using multislice helical computed tomography scans and included multiple measurements in axial, sagittal, and coronal planes. The measurements that were determined include axial anteroposterior and lateral, sagittal width, height and diagonal measurements, coronal width and height and facet angularity. Statistical analysis was performed using SPSS. Descriptive statistics were computed for all measurements, and probability values were calculated using the Student t-test.
This morphometric analysis of the lateral masses of the subaxial cervical spine in the Indian population, showed significant sex differences and also a significant variation in morphology as compared with the western race .These morphometric differences will aid in planning safe screw placement into the lateral masses. The ideal screw length and the trajectories for the screw insertion have been redefined.
|How to Cite this Abstract|
|Bosco A, Uvaraj N . Morphometric analysis of the lateral masses of the sub-axial cervical spine in the indian population and its correlation with lateral mass screw placement . International Journal of Conference Proceedings 2015;(2015):90|