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Comparison and prediction of pullout strength of the conical and cylindrical pedicle screws within synthetic bone

โœ Scribed by W.-C. Tsai; S.-J. Lin; T.-M. Wang; P.-Q. Chen


Book ID
108333360
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
159 KB
Volume
39
Category
Article
ISSN
0021-9290

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## Abstract Screw loosening can threaten pedicle screw fixation of the spine. Conical screws can improve the bending strength, but studies of their pullout strength as compared with that of cylindrical screws have shown wide variation. In the present study, polyurethane foam with two different dens