Biomechanical Evaluation of Cross Trajectory Technique for Pedicle Screw Insertion: Combined Use of Traditional Trajectory and Cortical Bone Trajectory
نویسندگان
چکیده
منابع مشابه
The Cortical Bone Trajectory for Pedicle Screw Insertion.
P edicle screw fixation for spinal stabilization is now commonplace in spine surgery. Traditionally, pedicle screws are placed through a trajectory in which screw insertion utilizes a transpedicular path through the axis of the pedicle, either paralleling the end plate, as in the straightforward trajectory, or following the anatomic axis of the pedicle with an approximately 22° cephalocaudal tr...
متن کاملFatigue Performance of Cortical Bone Trajectory Screw Compared With Standard Trajectory Pedicle Screw.
STUDY DESIGN Cadaveric biomechanical study. OBJECTIVE To determine fatigue behavior of cortical bone trajectory (CBT) pedicle screws. SUMMARY OF BACKGROUND DATA Cortical bone trajectory screws have been becoming popular in spine surgery; however, the long-term fatigue behavior of the new CBT screws remains understudied and limitations not well defined. METHODS Twelve vertebrae from six ca...
متن کاملCortical bone trajectory for lumbar pedicle screws.
BACKGROUND CONTEXT Achieving solid implant fixation to osteoporotic bone presents a clinical challenge. New techniques and devices are being designed to increase screw-bone purchase of pedicle screws in the lumbar spine via a novel cortical bone trajectory that may improve holding screw strength and minimize loosening. Preliminary clinical evidence suggests that this new trajectory provides scr...
متن کاملErratum to: A biomechanical comparison between cortical bone trajectory fixation and pedicle screw fixation
Erratum After publication of the original article [1] it came to our attention that the legends for figures 2 and 3 had been interchanged. The correct legend for figure two is 'Pedicle screw fusion model' and the correct legend for figure three is 'Cortical bone trajectory model'. biomechanical comparison between cortical bone trajectory fixation and pedicle screw fixation. permits unrestricted...
متن کاملA biomechanical comparison between cortical bone trajectory fixation and pedicle screw fixation
PURPOSE There have been several reports on the pullout strength of cortical bone trajectory (CBT) screws, but only one study has reviewed the stability of functional spine units using the CBT method. The purpose of this study was to compare vertebral stability after CBT fixation with that after pedicle screw (PS) fixation. METHODS In this study, 20 lumbar spine (L5-6) specimens were assigned ...
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ژورنال
عنوان ژورنال: Orthopaedic Surgery
سال: 2015
ISSN: 1757-7853
DOI: 10.1111/os.12212