Pedicle Screw Segmentation Report

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Introduction
Pedicle screw augmentation of the posterior lumbosacral spine has long been considered the gold standard for rigid three-column fixation. Since the pioneering work of Roy-Camille and colleagues[1], several novel instruments and techniques have emerged which aid in a more reliable construct less tissue destruction and ultimately greater patient satisfaction.
Modern advances in spine surgery in conjunction with a growing desire for less invasive procedures are rapidly propelling the design of instruments and implants to achieve greater posterior spinal fixation, with decreased tissue destruction and higher safety margins [2]. The focus of this paper is to discuss the surgical technique, advantages and disadvantages of …show more content…

Incision length was measured at 1.5 inch (Figure 6).

Discharge and follow up
All patients were discharged within hours of completing surgery after being deemed oriented and neurologically intact by the anesthesiologist and operating surgeon. Outpatient postoperative instructions were discussed with all patients and caregivers with written copies provided (Figure 7). Postoperative radiographs done at three weeks demonstrated satisfactory position of the cortical pedicle screw and rod constructs (PSRC) (Figure 8A/B).

Tips and tricks
1. When establishing the starting point, the high speed burr or drill provides more accurate starting points than an awl. Due to the angle of the screw trajectory and the lordotic nature of the lumbar spine, the awl will tend to walk and cause the starting point to be more cephalad than intended. In a patient with aggressive hemilaminotomy or narrow pars, the awl can cause a fracture.
2. For the first few cases, we recommend advancing the drill on oscillate. This allows for increased tactile feedback and reassures the surgeon as the neural elements can not become wrapped around the drill

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