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1911, this operative procedure has gradually become the most widely used for treating spinal pathologies ( 4 ). Pedicle screw placement played an important role in the reconstruction of spinal stability, promoting fusion and early rehabilitation, and
Department of Orthopedic Surgery, Spine Unit, Centre Hospitalier de l’Université de Montréal (CHUM), Canada.
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with less patient discomfort. Minimally invasive or percutaneous pedicle screw placement was made easier with the advent of cannulated screws. The surgical procedure may be fluoroscopy-assisted or, recently, navigation-assisted. Fluoroscopy
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and placement of pedicle screws at planned levels, the concave side rod is placed initially as usual. Then, rod de-rotation and translation is applied to reduce the rod into the screw tulips. If the apical vertebra rotation and rib prominence is too
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headless compression screw in the presence of humpback deformity or dorsal intercalated segment instability. They achieved 100% union rate and good functional results. 40 Pronator quadratus pedicled grafts carry relatively less risk with vascular
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, which leads to a more narrow and oblique screw pathway in S1 making screw placement difficult and significantly increasing the risk of iatrogenic vessel and nerve injury ( 25 ). This occurrence must be looked at during surgical planning in the
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percutaneous placement of pedicle screws in thoracolumbar spine surgery, closed reduction, and tunnelled placement of implants in the treatment of tibial or femoral metaphyseal fractures with specially designed plates or calcaneus osteosyntheses with slit
Faculty of Medicine, Geneva University, Switzerland
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Faculty of Medicine, Geneva University, Switzerland
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. Accuracy of pedicle screw placement based on preoperative computed tomography versus intraoperative data set acquisition for spinal navigation system . J Orthop Surg 2017 ; 25 : 2309499017718901 . 3. Conlan TK Beebe MJ
Academic Department of Trauma and Orthopaedics, LGI, University of Leeds, UK
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NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, UK
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computed tomography (CT) scan showing reduction of the sacral fracture and safe placement of S1 screws. (O) Axial cut of pelvic CT scan showing safe placement of S2 screw. Fig. 7 (A) Lateral sacral radiograph showing a U-type fracture. Patient
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sternoclavicular dislocation to syndesmotic reduction. 16 , 17 The main indication of the o-arm remains in pedicle screw placement in combination with an intra-operative navigation system. The combination of these systems can reduce the pedicle screw
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. Instrumentation Instrumentation should be done before any osteotomy attempt. This should be followed by laminectomy. Standard pedicle screws are used at least three levels above and below the level of osteotomy. If there is a thick fusion mass, and the
