Biomechanical Comparison of Pedicle Screw Augmented with Different Volumes of Polymethylmethacrylate in Osteoporotic and Severely Osteoporotic Synthetic Bone Blocks in Primary Implantation: An Experimental Study

This study was designed to compare screw stabilities augmented with different volumes of PMMA and analyze relationship between screw stability and volume of PMMA and optimum volume of PMMA in different bone condition. Osteoporotic and severely osteoporotic synthetic bone blocks were divided into groups A0-A5 and B0-B5, respectively. Different volumes of PMMA were injected in groups A0 to A5 and B0 to B5. Axial pullout tests were performed andFmaxwas measured.Fmaxin groups A1-A5 were all significantly higher than group A0. Except between groups A1 and A2, A3 and A4, and A4 and A5, there were significant differences onFmaxbetween any other two groups.Fmaxin groups B1-B5 were all significantly higher than group B0. Except between groups B1 and B2, B2 and B3, and B4 and B5, there were significant differences onFmaxbetween any other two groups. There was significantly positive correlation betweenFmaxand volume of PMMA in osteoporotic and severely osteoporotic blocks. PMMA can significantly enhance pedicle screw stability in osteoporosis and severe osteoporosis. There were positive correlations between screw stability and volume of PMMA. In this study, injection of 3 mL and 4 mL PMMA was preferred in osteoporotic and severely osteoporotic blocks, respectively.

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Biomechanical Comparison of Expansive Pedicle Screw and Polymethylmethacrylate-augmented Pedicle Screw in Osteoporotic Synthetic Bone in Primary Implantation

Clinical Spine Surgery ◽

10.1097/bsd.0b013e31828bfc85 ◽

2016 ◽

Vol 29 (7) ◽

pp. E351-E357 ◽

Cited By ~ 19

Author(s):

Da Liu ◽

Lei Shi ◽

Wei Lei ◽

Meng-Qi Wei ◽

Bo Qu ◽

...

Keyword(s):

Pedicle Screw ◽

Synthetic Bone ◽

Biomechanical Comparison ◽

Primary Implantation

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Biomechanical comparison of pedicle screw augmented with different volumes of polymethylmethacrylate in osteoporotic and severely osteoporotic cadaveric lumbar vertebrae: an experimental study

The Spine Journal ◽

10.1016/j.spinee.2016.04.015 ◽

2016 ◽

Vol 16 (9) ◽

pp. 1124-1132 ◽

Cited By ~ 9

Author(s):

Da Liu ◽

Bo Zhang ◽

Qing-yun Xie ◽

Xia Kang ◽

Jiang-jun Zhou ◽

...

Keyword(s):

Experimental Study ◽

Pedicle Screw ◽

Lumbar Vertebrae ◽

Biomechanical Comparison

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A Biomechanical Comparison of a Novel Thoracic Screw Fixation Method: Transarticular Screw Fixation vs Traditional Pedicle Screw Fixation

Yearbook of Neurology and Neurosurgery ◽

10.1016/j.yneu.2012.01.006 ◽

2012 ◽

Vol 2012 ◽

pp. 272-274

Author(s):

R. Riesenburger

Keyword(s):

Pedicle Screw ◽

Screw Fixation ◽

Pedicle Screw Fixation ◽

Fixation Method ◽

Transarticular Screw ◽

Transarticular Screw Fixation ◽

Biomechanical Comparison

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A biomechanical comparison of polymethylmethacrylate-reinforced and expansive pedicle and screws in pedicle-screw revisions

Acta Orthopaedica et Traumatologica Turcica ◽

10.3944/aott.2009.272 ◽

2009 ◽

Vol 43 (3) ◽

pp. 272-276 ◽

Cited By ~ 10

Author(s):

Bostan

Keyword(s):

Pedicle Screw ◽

Biomechanical Comparison

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Increasing pedicle screw anchoring in the osteoporotic spine by cement injection through the implant

Journal of Neurosurgery Spine ◽

10.3171/spi-07/09/366 ◽

2007 ◽

Vol 7 (3) ◽

pp. 366-369 ◽

Cited By ~ 39

Author(s):

Patrick Fransen

Keyword(s):

Pedicle Screw ◽

Degenerative Spondylolisthesis ◽

Elevated Risk ◽

Severe Osteoporosis ◽

Poor Bone Quality ◽

Decompressive Laminectomy ◽

Hardware Failure ◽

Cement Injection ◽

Fluoroscopic Control ◽

Additional Stability

✓Instrumented spinal fusion in patients with osteoporosis is challenging because of the poor bone quality and is complicated by an elevated risk of delayed hardware failure. The author treated two patients presenting with severe osteoporosis, spinal stenosis, and degenerative spondylolisthesis. He performed decompressive laminectomy, posterolateral fusion, and pedicle screw (PS) fixation involving screws with side openings that allow cement to be injected through the implant. The cement injection was conducted under fluoroscopic control without complications. Although this technique needs validation in a larger population of patients, the author believes that the injection of cement through these PSs can be performed safely in carefully selected patients. This technique creates not only a vertebroplasty-like effect that strengthens the vertebral body but also provides the additional stability afforded by the immediate anchoring of the screw, which may allow a shorter-length construct, save mobile segments, and finally reduce the risk of hardware failure.

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Can music inspire translators?

Translation and Interpreting Studies ◽

10.1075/tis.18018.nar ◽

2020 ◽

Vol 15 (2) ◽

pp. 280-303 ◽

Cited By ~ 1

Author(s):

Beatriz Naranjo

Keyword(s):

Experimental Study ◽

Beneficial Effect ◽

Emotional Content ◽

Literary Texts ◽

Emotional Involvement ◽

Translation Quality ◽

Narrative Engagement ◽

Positive Correlations ◽

Emotional Level

Abstract This article examines the role of musically-triggered narrative engagement in translation performance. An experimental study was conducted to investigate the potential of music to induce narrative engagement (NE), based on findings that suggest the influence of NE-relevant dimensions such as visualization and emotional involvement in translation. Participants translated two literary texts with opposing emotional content (happy and sad) in two different sound conditions (with and without music). Three hypotheses were formulated predicting a beneficial effect of music for narrative engagement as well as positive correlations between narrative engagement and translation quality and creativity. Results suggest an increase of visualization in the music condition and a correlation between visualization levels and accuracy scores. Retrospective questionnaires indicate a positive appraisal of the experience of translating with music at both the cognitive and emotional level, although further investigations is needed to validate the scale and confirm its reliability.

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