Pedicle screw
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Pyogenic spondylitis by methicillin-resistant Staphylococcus aureus (MRSA) is known to be intractable. In the past, the insertion of an implant into infected vertebra was considered contraindicated in affected patients because it may exacerbate the infection, but there are increasing numbers of reports indicating the usefulness of posterior fixation to correct instability and alleviate infection.
8p vitiki 30-01-2024 4 2 Download
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This study aims to evaluate radiological outcomes of short-segment pedicle screw fixation with transforaminal interbody fusion (TIF) using bone chip graft for treatment of unstable thoracolumbar burst fracture, Denis type IIB.
6p vispacex 13-11-2023 4 2 Download
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Few reports to date have evaluated the efects of diferent pedicle screw insertion depths on sagittal balance and prognosis after posterior lumbar interbody and fusion (PLIF) in patients with lumbar degenerative spon‑ dylolisthesis (LDS). A total of 88 patients with single-level PLIF for LDS from January 2018 to December 2019 were enrolled. Long screw group (Group L): 52 patients underwent long pedicle screw fxation (the leading edge of the screw exceeded 80% of the anteroposterior diameter of vertebral body).
12p vimackenziebezos 30-11-2021 20 1 Download
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Early versions of spinal muscular atrophy (SMA) scoliosis correction surgery often involved sublaminar devices. Recently, the utilization of pedicle screws has gained much popularity. Pedicle screws are generally believed to provide additional deformity correction, but pedicle size and rotational deformity limit their application in the thoracic spine, resulting in a hybrid construct involving pedicle screws and sublaminar wire. Studies of the efcacy of hybrid instrumentation in SMA scoliosis are often limited by the scarcity of the disease itself.
8p vimackenziebezos 30-11-2021 14 0 Download
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This paper was a anatomical radiographic study of distance between lumbar bi-cortical pedicle screws (BPSs) and anterior large vessels (ALVs) in patients with lumbar spondylolisthesis, and to provide clinical basis for evaluating the safety of bi-cortical pedicle screw implantation during lumbar spondylolisthesis.
9p vimackenziebezos 30-11-2021 7 1 Download
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While several studies report on accuracy rates of pedicle screws, risk factors associated with inaccurate pedicle screw positioning in patients with thoracolumbar fractures are reported rarely. CT scan as a routine postoperative control is advocated by various authors, however its necessity remains unclear
7p vimackenziebezos 30-11-2021 12 1 Download
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This study aims to analyze postoperative changes of cervical sagittal curvature and to identify independent risk factors for cervical kyphosis in Lenke type 1 adolescent idiopathic scoliosis (AIS) patients.
9p vimackenziebezos 30-11-2021 11 1 Download
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Description of clinical features, the characteristiscs of conventional Xray, computed tomography and LSC in patients with thoracolumbar spinal trauma, Denis type IIB who was operated. Evaluation of the results of surgical treatment for thoracolumbar spinal trauma, Denis type IIB by short-configuration fixation combined with transforaminal interbody fusion and comparison of treatment outcomes by group of LSC score.
28p kequaidan12 03-06-2021 27 3 Download
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Posterior vertebral column resection (PVCR) is an effective alternative for treating rigid and severe spinal deformities. Accurate placement of pedicle screws, especially apically, is crucial. As morphologic evaluations of thoracic pedicles have not provided objective criteria, we propose a thoracic pedicle classification for treating rigid and severe spinal deformities.
7p viannito2711 20-04-2021 2 1 Download
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Cervical pedicle screw (CPS) insertion is a technically demanding procedure. The quantitative understanding of cervical pedicle morphology, especially the narrowest part of cervical pedicle or isthmus, would minimize the risk of catastrophic damage to surrounding neurovascular structures and improve surgical outcome.
10p viannito2711 20-04-2021 18 1 Download
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The biomechanical performance of the hooks and screws in spinal posterior instrumentation is not well-characterized. Screw-bone interface failure at the uppermost and lowermost vertebrae is not uncommon. Some have advocated for the use of supplement hooks to prevent screw loosening.
7p viannito2711 20-04-2021 8 1 Download
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Currently, Posterior Short Segment Pedicle Screw Fixation is a popular procedure for treating unstable thoracolumbar/lumbar burst fracture. But progressive kyphosis and a high rate of hardware failure because of lack of the anterior column support remains a concern.
11p viannito2711 20-04-2021 7 1 Download
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To improve the strength of posterior spine fixation in patients with osteoporosis, some scholars have proposed a method of simultaneously inserting traditional pedicle screws and cortical bone trajectory screws into the pedicle.
8p vianttinic2711 20-04-2021 10 2 Download
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This study was to evaluate and compare the biomechanical features of multilevel lateral lumbar interbody fusion (LLIF) with or without supplemental instrumentations. Methods: Six human lumbar specimens were tested under multidirectional nondestructive moments (7.5 N·m), with a 6 degree-of-freedom spine simulator.
7p vianttinic2711 20-04-2021 14 2 Download
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Percutaneous pedicle screw instrumentation is a minimally invasive surgical technique; however, the effects of using percutaneous pedicle screw fixation in treating patients with spinal infections have not yet been well demonstrated.
8p vianttinic2711 20-04-2021 11 1 Download
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Pedicle-screw-based posterior dynamic stabilization devices are designed to alleviate the rate of accelerated degeneration of the vertebral level adjacent to the level of spinal fusion. A new pedicle- screw-based posterior dynamic stabilization device- the Awesome Dynamic Rod System was designed with curve cuts on the rods to provide flexibility.
8p vianttinic2711 20-04-2021 10 1 Download
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To analyze how pedicle subtraction osteotomy (PSO) treatment of severe Scheuermann thoracolumbar kyphosis (STLK) using pedicle screw instrumentation affects sagittal spinopelvic parameters. Background: The medical literature on the post-surgical effects of treatments such as Ponte osteotomy is limited, but suggests few effects on spinopelvic profiles.
8p vianttinic2711 20-04-2021 22 2 Download
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The pedicle screw placement in scoliosis correction at the apex underlies potential risk for neurological injury. This research is to investigate the relative position of spinal cord at the apex in idiopathic thoracic scoliosis and to explore the risk of spinal cord injury from pedicle screw at the apex.
6p vioregon2711 22-02-2021 7 2 Download
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We sought to evaluate the long-term outcomes of long-level instrumented posterolateral fusion (PLF) directly compared to those with short level instrumented PLF for degenerative spinal stenosis.
7p vioregon2711 22-02-2021 10 1 Download
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To the best of our knowledge, there have been no reports on the points at which the denervated multifidus and erector spinae muscles become reinnervated after pedicle screw fixation and posterior fusion in patients with lumbar degenerative diseases.
8p vioregon2711 22-02-2021 13 2 Download