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

2016 ◽  
Vol 16 (9) ◽  
pp. 1124-1132 ◽  
Author(s):  
Da Liu ◽  
Bo Zhang ◽  
Qing-yun Xie ◽  
Xia Kang ◽  
Jiang-jun Zhou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Pedicle Screw ◽  
Lumbar Vertebrae ◽  
Biomechanical Comparison

scholarly journals 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

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Da Liu ◽  
Xiao-jun Zhang ◽  
Dong-fa Liao ◽  
Jiang-jun Zhou ◽  
Zhi-qiang Li ◽  
...  
Keyword(s):  
Experimental Study ◽  
Pedicle Screw ◽  
Severe Osteoporosis ◽  
Synthetic Bone ◽  
Pullout Tests ◽  
Positive Correlations ◽  
Biomechanical Comparison ◽  
Bone Condition ◽  
Primary Implantation ◽  
Optimum Volume

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.

Biomechanical Comparison of 4 Fixation Techniques of Sacral Pedicle Screw in Osteoporotic Condition

2010 ◽  
Vol 23 (6) ◽  
pp. 404-409 ◽  
Author(s):  
Bin-Sheng Yu ◽  
Xin-Ming Zhuang ◽  
Zhao-Min Zheng ◽  
Jia-Fang Zhang ◽  
Ze-Min Li ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Fixation Techniques ◽  
Biomechanical Comparison

Biomechanical Comparison of Sacral Fixation Characteristics of Standard S1-Pedicle Screw Fixation versus a Novel Constrained S1-Dual-Screw Anchorage in the S1-Pedicle and S1-Alar Bone

Spine ◽  
2015 ◽  
Vol 40 (24) ◽  
pp. 1890-1897 ◽  
Author(s):  
Michael Mayer ◽  
Daniel Stephan ◽  
Herbert Resch ◽  
Peter Augat ◽  
Alexander Auffarth ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Biomechanical Comparison
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