Now showing items 1-3 of 3
Evaluation of the Effect of Fixation Angle between Polyaxial Pedicle Screw Head and Rod on the Failure of Screw-Rod Connection
(Hindawi Ltd, 2015)
Introduction. Polyaxial screws had been only tested according to the ASTM standards (when they were perpendicularly positioned to the rod). In this study, effects of the pedicle screws angled fixation to the rod on the ...
Biomechanical comparison of unilateral semi-rigid and dynamic stabilization on ovine vertebrae
(Sage Publications Ltd, 2015-11)
Using the unilateral pedicle screw fixation was thought to decrease the stiffness of the fixed segments. Various prospective, randomized studies were performed to determine whether unilateral pedicle screw fixation provides ...
Possible usage of cannulated pedicle screws without cement augmentation
(Hindawi Ltd, 2014)
BACKGROUND: The use of pedicle screws is becoming increasingly popular for spinal surgery practice as the technology advances. Screw pullout due to bone quality and loading conditions is one of the most common problems ...