Bicortical Versus Unicortical Pedicle Screws in Direct Vertebral Rotation: An In Vitro Experimental Study
Journal of Spinal Disorders & Techniques, 08/02/2012
Murat B et al. – Bicortical screw placement may provide a biomechanically superior construct than unicortical screw placement for resisting direct vertebral rotation (DVR) maneuver during scoliosis correction. This technique may represent an effective and safe approach, particularly for the convex side of the scoliosis apex, with increased resistance to derotational forces and decreased risk of bone failure. Further clinical studies are warranted for firmer conclusions.