Mid-clavicle fracture: biomechanical difference between anterior and superior reconstruction plate

doi:10.3969/j.issn.2095-4344.2014.53.022

Abstract

Abstract:

BACKGROUND: Clavicle has a superficial location and is prone to fracture caused by external stress. Reconstruction plate repair is a common mode of treatment, but the best location of the plate placed remains controversial.
OBJECTIVE: This study aims to compare biomechanical data between anterior and superior reconstruction plate fixation for treating the mid-clavicle oblique fracture using the finite element method, so as to find more effective plate position.
METHODS: Six healthy men accepting medical examination in our hospital from September 2012 to September 2013 were selected and were detected with clavicular spiral CT scanning. Three-dimensional finite element method was used to establish three-dimensional finite element models for anterior and superior reconstruction plate fixation in treatment of mid-clavicle oblique fracture. Different situations were simulated to compare biomechanical data.
RESULTS AND CONCLUSION: There was no significant difference in the indexes of biomechanics between the anterior and the superior positions under the compression condition (P > 0.05). Under the conditions of clockwise torsion and bending, the maximal stress at the anterior position was significantly higher than that at the superior position (P < 0.05), but no significant difference was found in the maximum displacement of fracture block (P > 0.05). Under counterclockwise torsion and bending conditions, the two positions showed no significant difference in the detected indexes (P > 0.05); no statistically significant differences were found in the displacement under bending condition (P > 0.05), but the internal fixation stress and fracture stress at the anterior position were significantly higher than that at the superior position, and anterior position had more obvious stress concentration effect (P < 0.05). Reconstruction plate at the two positions may cause different biomechanical data in treatment of clavicle fractures, and anterior plate fixation is more reliable.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: clavicle, fracture, internal fixators, stress, biomechanics

CLC Number:

R318

Liu Chuan. Mid-clavicle fracture: biomechanical difference between anterior and superior reconstruction plate[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(53): 8646-8650.

Figures/Tables 2

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