The Mechanical Benefit of Medial Support Screws in Locking Plating of Proximal Humerus Fractures

Wen Zhang, Langqing Zeng, Yanjie Liu, Yao Pan, Wei Zhang, Changqing Zhang, Bingfang Zeng and Yunfeng Chen

PLOS ONE, 2014, vol. 9, issue 8, 1-8

Abstract: Background: The purpose of this study was to evaluate the biomechanical advantages of medial support screws (MSSs) in the locking proximal humeral plate for treating proximal humerus fractures. Methods: Thirty synthetic left humeri were randomly divided into 3 subgroups to establish two-part surgical neck fracture models of proximal humerus. All fractures were fixed with a locking proximal humerus plate. Group A was fixed with medial cortical support and no MSSs; Group B was fixed with 3 MSSs but without medial cortical support; Group C was fixed with neither medial cortical support nor MSSs. Axial compression, torsional stiffness, shear stiffness, and failure tests were performed. Results: Constructs with medial support from cortical bone showed statistically higher axial and shear stiffness than other subgroups examined (P

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0103297

DOI: 10.1371/journal.pone.0103297

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