Abstract
Over recent years, pedicle screw fixation is widely used in spine surgery, which allows 3-dimensional fixation with a more rigidconstruct and permits a shorter fusion length. However, its fixationeffect is not so good for patients with severe osteoporosis. Cortical bone trajectory screw insertion has been advocated because it is reportedly less invasive, improvesscrew-bone purchase and reduces neurovascular injury. Based on the present evidence, the author evaluates the relative advantages of cortical bone channels. To this end, a search of relevant published studies reporting biomechanical, morphemetricor clinical outcomes after using of cortical bone trajectory screws in patients with spinal pathologies is reviewed. Key words: Research; Spinal diseases; Osteoporosis; Cortical bone; Pedice screw
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